Synth-DIY Yahoo! Groups Archives

Thread

Removing SMDs

2011-07-04 by msmickelsen

Does anyone know of a manual vacuum picker-upper for SMD parts. I don't have enough of them to do to justify too much expense. But part of what I have to do is remove just a few SMD resistors in a larger field of many such devices. I'm thinking that I'll have to heat the whole board and loosen all of the SMDs and then just pick off the few that I need to. It seems to me that the easiest way to do that will be with some kind of vacuum tool. I think I've seen tool that were operated by actually sucking on a tube in order to pick up the SMD. I also think that I've seen a DIY device that used an aquarium pump to supply the vacuum.

In any event, would someone care to advise me as to what might the best solution to this problem? A vacuum may not be the best way.

Thanks,
Mark

Re: [Homebrew_PCBs] Removing SMDs

2011-07-04 by Jan Kok

For 2-terminal parts, use a soldering tip that is wide enough to
contact both pads. Heat both pads at once (add some solder if
necessary) and push the part sideways off the pads. Then clean off the
pads with solder wick, and you're ready to install a new part.

If you don't have a hot air soldering tool, and you need to remove an
IC, and you don't mind destroying the part, heat up the legs one at a
time, push them sideways off the pad, and break them off. Don't try to
cut the pins with cutters - it may damage a pad.

Cheers,
- Jan

Show quoted textHide quoted text

On Sun, Jul 3, 2011 at 7:39 PM, msmickelsen <msmickelsen@...> wrote:
> Does anyone know of a manual vacuum picker-upper for SMD parts. I don't have enough of them to do to justify too much expense. But part of what I have to do is remove just a few SMD resistors in a larger field of many such devices. I'm thinking that I'll have to heat the whole board and loosen all of the SMDs and then just pick off the few that I need to. It seems to me that the easiest way to do that will be with some kind of vacuum tool. I think I've seen tool that were operated by actually sucking on a tube in order to pick up the SMD. I also think that I've seen a DIY device that used an aquarium pump to supply the vacuum.
>
> In any event, would someone care to advise me as to what might the best solution to this problem? A vacuum may not be the best way.
>
> Thanks,
> Mark
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>

Re: [Homebrew_PCBs] Removing SMDs

2011-07-04 by Stefan Trethan

Just use regular metal tweezers.
I have such a vacuum pick-up tool (with a pump) but almost never use it.

ST

Show quoted textHide quoted text

On Mon, Jul 4, 2011 at 3:39 AM, msmickelsen <msmickelsen@...> wrote:
> Does anyone know of a manual vacuum picker-upper for SMD parts. I don't have enough of them to do to justify too much expense. But part of what I have to do is remove just a few SMD resistors in a larger field of many such devices. I'm thinking that I'll have to heat the whole board and loosen all of the SMDs and then just pick off the few that I need to. It seems to me that the easiest way to do that will be with some kind of vacuum tool. I think I've seen tool that were operated by actually sucking on a tube in order to pick up the SMD. I also think that I've seen a DIY device that used an aquarium pump to supply the vacuum.
>
> In any event, would someone care to advise me as to what might the best solution to this problem? A vacuum may not be the best way.
>
> Thanks,
> Mark
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>

Re: [Homebrew_PCBs] Removing SMDs

2011-07-04 by Paul Mateer

I have one too, but never use it. Use tweezers. If removing an IC, I suggest
looking into "chip quik". For C's and R's, you can alternately heat each end
and "float" it off.

Show quoted textHide quoted text

On Sun, Jul 3, 2011 at 11:33 PM, Stefan Trethan <stefan_trethan@...>wrote:

> **
>
>
> Just use regular metal tweezers.
> I have such a vacuum pick-up tool (with a pump) but almost never use it.
>
> ST
>
>
> On Mon, Jul 4, 2011 at 3:39 AM, msmickelsen <msmickelsen@...> wrote:
> > Does anyone know of a manual vacuum picker-upper for SMD parts. I don't
> have enough of them to do to justify too much expense. But part of what I
> have to do is remove just a few SMD resistors in a larger field of many such
> devices. I'm thinking that I'll have to heat the whole board and loosen all
> of the SMDs and then just pick off the few that I need to. It seems to me
> that the easiest way to do that will be with some kind of vacuum tool. I
> think I've seen tool that were operated by actually sucking on a tube in
> order to pick up the SMD. I also think that I've seen a DIY device that
> used an aquarium pump to supply the vacuum.
> >
> > In any event, would someone care to advise me as to what might the best
> solution to this problem? A vacuum may not be the best way.
> >
> > Thanks,
> > Mark
> >
> >
> >
> > ------------------------------------
>
> >
> > Be sure to visit the group home and check for new Links, Files, and
> Photos:
> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> >
> >
> >
>
>

--
Paul Mateer, AA9GG
Elan Engineering Corp.
www.elanengr.com
NAQCC 3123, SKCC 4628, FPQRP 2003

[Non-text portions of this message have been removed]

Re: [Homebrew_PCBs] Removing SMDs

2011-07-04 by Andrew Hakman

Hot tweezers work good, or if you don't have the budget to buy those, 2
irons with small-ish tips works good too! That way you can heat both sides
at the same time, and surface mount L C and R's come off quite easily.

I've never had much luck with the "alternate sides method", unless you don't
mind destroying the part.

Andrew

Show quoted textHide quoted text

On Sun, Jul 3, 2011 at 10:51 PM, Paul Mateer <paul.aa9gg@...> wrote:

> I have one too, but never use it. Use tweezers. If removing an IC, I
> suggest
> looking into "chip quik". For C's and R's, you can alternately heat each
> end
> and "float" it off.
>
> On Sun, Jul 3, 2011 at 11:33 PM, Stefan Trethan <stefan_trethan@...
> >wrote:
>
> > **
> >
> >
> > Just use regular metal tweezers.
> > I have such a vacuum pick-up tool (with a pump) but almost never use it.
> >
> > ST
> >
> >
> > On Mon, Jul 4, 2011 at 3:39 AM, msmickelsen <msmickelsen@...>
> wrote:
> > > Does anyone know of a manual vacuum picker-upper for SMD parts. I
> don't
> > have enough of them to do to justify too much expense. But part of what
> I
> > have to do is remove just a few SMD resistors in a larger field of many
> such
> > devices. I'm thinking that I'll have to heat the whole board and loosen
> all
> > of the SMDs and then just pick off the few that I need to. It seems to
> me
> > that the easiest way to do that will be with some kind of vacuum tool. I
> > think I've seen tool that were operated by actually sucking on a tube in
> > order to pick up the SMD. I also think that I've seen a DIY device that
> > used an aquarium pump to supply the vacuum.
> > >
> > > In any event, would someone care to advise me as to what might the best
> > solution to this problem? A vacuum may not be the best way.
> > >
> > > Thanks,
> > > Mark
> > >
> > >
> > >
> > > ------------------------------------
> >
> > >
> > > Be sure to visit the group home and check for new Links, Files, and
> > Photos:
> > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> > >
> > >
> > >
> > >
> >
> >
>
>
>
> --
> Paul Mateer, AA9GG
> Elan Engineering Corp.
> www.elanengr.com
> NAQCC 3123, SKCC 4628, FPQRP 2003
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>

[Non-text portions of this message have been removed]

Re: Removing SMDs

2011-07-05 by Peter Leybourne

Somebody may have mentioned this.....
I saw somewhere an article with a soldering iron 'tip' extension made in the
shape of a two pronged fork. Several extensions were made as needed for
different size/shape components.

Peter
MM5PSL

Re: Removing SMDs

2011-07-07 by Andrew

Two or three months ago I posted a picture of a "forked" soldering iron tip that I made -- I was asking if I had come up with something new, or merely re-invented the wheel. Not surprisingly, it was the latter ... but all the same, it is a GREAT tool for removing SMD devices. The only downside is that it is made to fit one particular profile. Since I have the copper and the machine shop, I'll probably eventually make a few other profiles to fit the other SMD components that I tend to use.

Show quoted textHide quoted text

--- In Homebrew_PCBs@yahoogroups.com, "Peter Leybourne" <peter.ley08@...> wrote:
>
> Somebody may have mentioned this.....
> I saw somewhere an article with a soldering iron 'tip' extension made in the
> shape of a two pronged fork. Several extensions were made as needed for
> different size/shape components.
>
> Peter
> MM5PSL
>

Re: [Homebrew_PCBs] Re: Removing SMDs

2011-07-07 by Mark Mickelsen

Could you please post a link to the picture of the "forked soldering iron
tip". I looked on site, but didn't see anything with the name "Andrew" or
any cover pictures that looked like it. I'm probably blind, but I'd like to
see the pictures.
Thanks,
Mark

Show quoted textHide quoted text

On Thu, Jul 7, 2011 at 8:24 AM, Andrew <a_wake@...> wrote:

> **
>
>
> Two or three months ago I posted a picture of a "forked" soldering iron tip
> that I made -- I was asking if I had come up with something new, or merely
> re-invented the wheel. Not surprisingly, it was the latter ... but all the
> same, it is a GREAT tool for removing SMD devices. The only downside is that
> it is made to fit one particular profile. Since I have the copper and the
> machine shop, I'll probably eventually make a few other profiles to fit the
> other SMD components that I tend to use.
>
>
> --- In Homebrew_PCBs@yahoogroups.com, "Peter Leybourne" <peter.ley08@...>
> wrote:
> >
> > Somebody may have mentioned this.....
> > I saw somewhere an article with a soldering iron 'tip' extension made in
> the
> > shape of a two pronged fork. Several extensions were made as needed for
> > different size/shape components.
> >
> > Peter
> > MM5PSL
> >
>
>
>

[Non-text portions of this message have been removed]

Re: Removing SMDs

2011-07-08 by Andrew

Sure, here you go:

http://home.earthlink.net/~a_wake/SMD_soldering_iron_1.jpg

http://home.earthlink.net/~a_wake/SMD_soldering_iron_2.jpg

Show quoted textHide quoted text

--- In Homebrew_PCBs@yahoogroups.com, Mark Mickelsen <msmickelsen@...> wrote:
>
> Could you please post a link to the picture of the "forked soldering iron
> tip". I looked on site, but didn't see anything with the name "Andrew" or
> any cover pictures that looked like it. I'm probably blind, but I'd like to
> see the pictures.
> Thanks,
> Mark
>
> On Thu, Jul 7, 2011 at 8:24 AM, Andrew <a_wake@...> wrote:
>
> > **
> >
> >
> > Two or three months ago I posted a picture of a "forked" soldering iron tip
> > that I made -- I was asking if I had come up with something new, or merely
> > re-invented the wheel. Not surprisingly, it was the latter ... but all the
> > same, it is a GREAT tool for removing SMD devices. The only downside is that
> > it is made to fit one particular profile. Since I have the copper and the
> > machine shop, I'll probably eventually make a few other profiles to fit the
> > other SMD components that I tend to use.
> >
> >
> > --- In Homebrew_PCBs@yahoogroups.com, "Peter Leybourne" <peter.ley08@>
> > wrote:
> > >
> > > Somebody may have mentioned this.....
> > > I saw somewhere an article with a soldering iron 'tip' extension made in
> > the
> > > shape of a two pronged fork. Several extensions were made as needed for
> > > different size/shape components.
> > >
> > > Peter
> > > MM5PSL
> > >
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>

Re: [Homebrew_PCBs] Re: Removing SMDs

2011-07-08 by Henry Liu

Hot air gun/soldering station combo is around $100 new off ebay and is
probably the best solution.

Using hot air and flux in syringe I can remove most SMD components
including 200 pin qpfs in 20sec or less.

Low melt solder is ok except it's still easier to use the hot air
which has no cleanup.

Henry

Show quoted textHide quoted text

On Thu, Jul 7, 2011 at 1:27 PM, Mark Mickelsen <msmickelsen@...> wrote:
> Could you please post a link to the picture of the "forked soldering iron
> tip". I looked on site, but didn't see anything with the name "Andrew" or
> any cover pictures that looked like it. I'm probably blind, but I'd like to
> see the pictures.
> Thanks,
> Mark
>
> On Thu, Jul 7, 2011 at 8:24 AM, Andrew <a_wake@...> wrote:
>
>> **
>>
>>
>> Two or three months ago I posted a picture of a "forked" soldering iron tip
>> that I made -- I was asking if I had come up with something new, or merely
>> re-invented the wheel. Not surprisingly, it was the latter ... but all the
>> same, it is a GREAT tool for removing SMD devices. The only downside is that
>> it is made to fit one particular profile. Since I have the copper and the
>> machine shop, I'll probably eventually make a few other profiles to fit the
>> other SMD components that I tend to use.
>>
>>
>> --- In Homebrew_PCBs@yahoogroups.com, "Peter Leybourne" <peter.ley08@...>
>> wrote:
>> >
>> > Somebody may have mentioned this.....
>> > I saw somewhere an article with a soldering iron 'tip' extension made in
>> the
>> > shape of a two pronged fork. Several extensions were made as needed for
>> > different size/shape components.
>> >
>> > Peter
>> > MM5PSL
>> >
>>
>>
>>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>

Re: [Homebrew_PCBs] Re: Removing SMDs

2011-07-08 by Donald H Locker

I "recently" removed a 144-pin LQFP with XActo knife, iron and braid. If you have pics or a video of removing such a critter with iron and hot air in 20 sec, I'd live to see it. I spend the better part of 15 minutes on that part.

Donald.
--
*Plain Text* email -- it's an accessibility issue
() no proprietary attachments; no html mail
/\ ascii ribbon campaign - <www.asciiribbon.org>

Show quoted textHide quoted text

----- Original Message -----
> From: "Henry Liu" <henryjliu@...>
> To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> Sent: Thursday, July 7, 2011 8:38:54 PM
> Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
> Hot air gun/soldering station combo is around $100 new off ebay and is
> probably the best solution.
>
> Using hot air and flux in syringe I can remove most SMD components
> including 200 pin qpfs in 20sec or less.
>
> Low melt solder is ok except it's still easier to use the hot air
> which has no cleanup.
>
> Henry
>
> On Thu, Jul 7, 2011 at 1:27 PM, Mark Mickelsen <msmickelsen@...>
> wrote:
> > Could you please post a link to the picture of the "forked soldering
> > iron
> > tip". I looked on site, but didn't see anything with the name
> > "Andrew" or
> > any cover pictures that looked like it. I'm probably blind, but I'd
> > like to
> > see the pictures.
> > Thanks,
> > Mark
> >
> > On Thu, Jul 7, 2011 at 8:24 AM, Andrew <a_wake@...> wrote:
> >
> >> **
> >>
> >>
> >> Two or three months ago I posted a picture of a "forked" soldering
> >> iron tip
> >> that I made -- I was asking if I had come up with something new, or
> >> merely
> >> re-invented the wheel. Not surprisingly, it was the latter ... but
> >> all the
> >> same, it is a GREAT tool for removing SMD devices. The only
> >> downside is that
> >> it is made to fit one particular profile. Since I have the copper
> >> and the
> >> machine shop, I'll probably eventually make a few other profiles to
> >> fit the
> >> other SMD components that I tend to use.
> >>
> >>
> >> --- In Homebrew_PCBs@yahoogroups.com, "Peter Leybourne"
> >> <peter.ley08@...>
> >> wrote:
> >> >
> >> > Somebody may have mentioned this.....
> >> > I saw somewhere an article with a soldering iron 'tip' extension
> >> > made in
> >> the
> >> > shape of a two pronged fork. Several extensions were made as
> >> > needed for
> >> > different size/shape components.
> >> >
> >> > Peter
> >> > MM5PSL
> >> >
> >>
> >>
> >>
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > ------------------------------------
> >
> > Be sure to visit the group home and check for new Links, Files, and
> > Photos:
> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> >
> >
> >
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and
> Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>

Re: [Homebrew_PCBs] Re: Removing SMDs

2011-07-08 by Henry Liu

I just squirt solder flux out of the syringe on all the pins, turn up the
air gun to high and shoot hot air from the top and pick the part up with
tweezers 20secs or so later. Hot air heats all the pads up at once. Solder
flux isolates the area affected by the hot air. It's really simple and a
hot air gun is around $100.

A lot of smd parts have pads underneath such as thermal pads and qfn chips
and these are also no problem with a hot air gun.
Henry

Show quoted textHide quoted text

On Thu, Jul 7, 2011 at 6:45 PM, Donald H Locker <dhlocker@...>wrote:

> **
>
>
> I "recently" removed a 144-pin LQFP with XActo knife, iron and braid. If
> you have pics or a video of removing such a critter with iron and hot air in
> 20 sec, I'd live to see it. I spend the better part of 15 minutes on that
> part.
>
> Donald.
> --
> *Plain Text* email -- it's an accessibility issue
> () no proprietary attachments; no html mail
> /\ ascii ribbon campaign - <www.asciiribbon.org>
>
>
> ----- Original Message -----
> > From: "Henry Liu" <henryjliu@...>
> > To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> > Sent: Thursday, July 7, 2011 8:38:54 PM
> > Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
> > Hot air gun/soldering station combo is around $100 new off ebay and is
> > probably the best solution.
> >
> > Using hot air and flux in syringe I can remove most SMD components
> > including 200 pin qpfs in 20sec or less.
> >
> > Low melt solder is ok except it's still easier to use the hot air
> > which has no cleanup.
> >
> > Henry
> >
> > On Thu, Jul 7, 2011 at 1:27 PM, Mark Mickelsen <msmickelsen@...>
> > wrote:
> > > Could you please post a link to the picture of the "forked soldering
> > > iron
> > > tip". I looked on site, but didn't see anything with the name
> > > "Andrew" or
> > > any cover pictures that looked like it. I'm probably blind, but I'd
> > > like to
> > > see the pictures.
> > > Thanks,
> > > Mark
> > >
> > > On Thu, Jul 7, 2011 at 8:24 AM, Andrew <a_wake@...> wrote:
> > >
> > >> **
> > >>
> > >>
> > >> Two or three months ago I posted a picture of a "forked" soldering
> > >> iron tip
> > >> that I made -- I was asking if I had come up with something new, or
> > >> merely
> > >> re-invented the wheel. Not surprisingly, it was the latter ... but
> > >> all the
> > >> same, it is a GREAT tool for removing SMD devices. The only
> > >> downside is that
> > >> it is made to fit one particular profile. Since I have the copper
> > >> and the
> > >> machine shop, I'll probably eventually make a few other profiles to
> > >> fit the
> > >> other SMD components that I tend to use.
> > >>
> > >>
> > >> --- In Homebrew_PCBs@yahoogroups.com, "Peter Leybourne"
> > >> <peter.ley08@...>
> > >> wrote:
> > >> >
> > >> > Somebody may have mentioned this.....
> > >> > I saw somewhere an article with a soldering iron 'tip' extension
> > >> > made in
> > >> the
> > >> > shape of a two pronged fork. Several extensions were made as
> > >> > needed for
> > >> > different size/shape components.
> > >> >
> > >> > Peter
> > >> > MM5PSL
> > >> >
> > >>
> > >>
> > >>
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Be sure to visit the group home and check for new Links, Files, and
> > > Photos:
> > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> > >
> > >
> > >
> > >
> >
> >
> > ------------------------------------
> >
> > Be sure to visit the group home and check for new Links, Files, and
> > Photos:
> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> >
> >
>
>
>

[Non-text portions of this message have been removed]

Re: [Homebrew_PCBs] Re: Removing SMDs

2011-07-08 by Donald H Locker

Thank you, Henry. I have a hot air gun available, so I guess I'll have to give it a try.

Donald.
--
*Plain Text* email -- it's an accessibility issue
() no proprietary attachments; no html mail
/\ ascii ribbon campaign - <www.asciiribbon.org>

Show quoted textHide quoted text

----- Original Message -----
> From: "Henry Liu" <henryjliu@...>
> To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> Sent: Thursday, July 7, 2011 10:10:04 PM
> Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
> I just squirt solder flux out of the syringe on all the pins, turn up
> the
> air gun to high and shoot hot air from the top and pick the part up
> with
> tweezers 20secs or so later. Hot air heats all the pads up at once.
> Solder
> flux isolates the area affected by the hot air. It's really simple and
> a
> hot air gun is around $100.
>
> A lot of smd parts have pads underneath such as thermal pads and qfn
> chips
> and these are also no problem with a hot air gun.
> Henry
>
> On Thu, Jul 7, 2011 at 6:45 PM, Donald H Locker
> <dhlocker@...>wrote:
>
> > **
> >
> >
> > I "recently" removed a 144-pin LQFP with XActo knife, iron and
> > braid. If
> > you have pics or a video of removing such a critter with iron and
> > hot air in
> > 20 sec, I'd live to see it. I spend the better part of 15 minutes on
> > that
> > part.
> >
> > Donald.
> > --
> > *Plain Text* email -- it's an accessibility issue
> > () no proprietary attachments; no html mail
> > /\ ascii ribbon campaign - <www.asciiribbon.org>
> >
> >
> > ----- Original Message -----
> > > From: "Henry Liu" <henryjliu@...>
> > > To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> > > Sent: Thursday, July 7, 2011 8:38:54 PM
> > > Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
> > > Hot air gun/soldering station combo is around $100 new off ebay
> > > and is
> > > probably the best solution.
> > >
> > > Using hot air and flux in syringe I can remove most SMD components
> > > including 200 pin qpfs in 20sec or less.
> > >
> > > Low melt solder is ok except it's still easier to use the hot air
> > > which has no cleanup.
> > >
> > > Henry
> > >
> > > On Thu, Jul 7, 2011 at 1:27 PM, Mark Mickelsen
> > > <msmickelsen@...>
> > > wrote:
> > > > Could you please post a link to the picture of the "forked
> > > > soldering
> > > > iron
> > > > tip". I looked on site, but didn't see anything with the name
> > > > "Andrew" or
> > > > any cover pictures that looked like it. I'm probably blind, but
> > > > I'd
> > > > like to
> > > > see the pictures.
> > > > Thanks,
> > > > Mark
> > > >
> > > > On Thu, Jul 7, 2011 at 8:24 AM, Andrew <a_wake@...>
> > > > wrote:
> > > >
> > > >> **
> > > >>
> > > >>
> > > >> Two or three months ago I posted a picture of a "forked"
> > > >> soldering
> > > >> iron tip
> > > >> that I made -- I was asking if I had come up with something
> > > >> new, or
> > > >> merely
> > > >> re-invented the wheel. Not surprisingly, it was the latter ...
> > > >> but
> > > >> all the
> > > >> same, it is a GREAT tool for removing SMD devices. The only
> > > >> downside is that
> > > >> it is made to fit one particular profile. Since I have the
> > > >> copper
> > > >> and the
> > > >> machine shop, I'll probably eventually make a few other
> > > >> profiles to
> > > >> fit the
> > > >> other SMD components that I tend to use.
> > > >>
> > > >>
> > > >> --- In Homebrew_PCBs@yahoogroups.com, "Peter Leybourne"
> > > >> <peter.ley08@...>
> > > >> wrote:
> > > >> >
> > > >> > Somebody may have mentioned this.....
> > > >> > I saw somewhere an article with a soldering iron 'tip'
> > > >> > extension
> > > >> > made in
> > > >> the
> > > >> > shape of a two pronged fork. Several extensions were made as
> > > >> > needed for
> > > >> > different size/shape components.
> > > >> >
> > > >> > Peter
> > > >> > MM5PSL
> > > >> >
> > > >>
> > > >>
> > > >>
> > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > > >
> > > >
> > > > ------------------------------------
> > > >
> > > > Be sure to visit the group home and check for new Links, Files,
> > > > and
> > > > Photos:
> > > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Be sure to visit the group home and check for new Links, Files,
> > > and
> > > Photos:
> > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> > >
> > >
> > >
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and
> Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>

RE: [Homebrew_PCBs] Re: Removing SMDs

2011-07-08 by John Dammeyer

Specifically which heat gun are you using?

http://www.heat-guns.com/

John

Automation Artisans Inc.
http://www.autoartisans.com/ELS/
Ph. 1 250 544 4950

Show quoted textHide quoted text

> -----Original Message-----
> From: Homebrew_PCBs@yahoogroups.com
> [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of Henry Liu
> Sent: Thursday, July 07, 2011 7:10 PM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
>
>
> I just squirt solder flux out of the syringe on all the pins,
> turn up the
> air gun to high and shoot hot air from the top and pick the
> part up with
> tweezers 20secs or so later. Hot air heats all the pads up
> at once. Solder
> flux isolates the area affected by the hot air. It's really
> simple and a
> hot air gun is around $100.
>
> A lot of smd parts have pads underneath such as thermal pads
> and qfn chips
> and these are also no problem with a hot air gun.
> Henry
>
> On Thu, Jul 7, 2011 at 6:45 PM, Donald H Locker
> <dhlocker@...>wrote:
>
> > **
> >
> >
> > I "recently" removed a 144-pin LQFP with XActo knife, iron
> and braid. If
> > you have pics or a video of removing such a critter with
> iron and hot air in
> > 20 sec, I'd live to see it. I spend the better part of 15
> minutes on that
> > part.
> >
> > Donald.
> > --
> > *Plain Text* email -- it's an accessibility issue
> > () no proprietary attachments; no html mail
> > /\ ascii ribbon campaign - <www.asciiribbon.org>
> >
> >
> > ----- Original Message -----
> > > From: "Henry Liu" <henryjliu@...>
> > > To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> > > Sent: Thursday, July 7, 2011 8:38:54 PM
> > > Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
> > > Hot air gun/soldering station combo is around $100 new
> off ebay and is
> > > probably the best solution.
> > >
> > > Using hot air and flux in syringe I can remove most SMD components
> > > including 200 pin qpfs in 20sec or less.
> > >
> > > Low melt solder is ok except it's still easier to use the hot air
> > > which has no cleanup.
> > >
> > > Henry
> > >
> > > On Thu, Jul 7, 2011 at 1:27 PM, Mark Mickelsen
> <msmickelsen@...>
> > > wrote:
> > > > Could you please post a link to the picture of the
> "forked soldering
> > > > iron
> > > > tip". I looked on site, but didn't see anything with the name
> > > > "Andrew" or
> > > > any cover pictures that looked like it. I'm probably
> blind, but I'd
> > > > like to
> > > > see the pictures.
> > > > Thanks,
> > > > Mark
> > > >
> > > > On Thu, Jul 7, 2011 at 8:24 AM, Andrew
> <a_wake@...> wrote:
> > > >
> > > >> **
> > > >>
> > > >>
> > > >> Two or three months ago I posted a picture of a
> "forked" soldering
> > > >> iron tip
> > > >> that I made -- I was asking if I had come up with
> something new, or
> > > >> merely
> > > >> re-invented the wheel. Not surprisingly, it was the
> latter ... but
> > > >> all the
> > > >> same, it is a GREAT tool for removing SMD devices. The only
> > > >> downside is that
> > > >> it is made to fit one particular profile. Since I have
> the copper
> > > >> and the
> > > >> machine shop, I'll probably eventually make a few
> other profiles to
> > > >> fit the
> > > >> other SMD components that I tend to use.
> > > >>
> > > >>
> > > >> --- In Homebrew_PCBs@yahoogroups.com, "Peter Leybourne"
> > > >> <peter.ley08@...>
> > > >> wrote:
> > > >> >
> > > >> > Somebody may have mentioned this.....
> > > >> > I saw somewhere an article with a soldering iron
> 'tip' extension
> > > >> > made in
> > > >> the
> > > >> > shape of a two pronged fork. Several extensions were made as
> > > >> > needed for
> > > >> > different size/shape components.
> > > >> >
> > > >> > Peter
> > > >> > MM5PSL
> > > >> >
> > > >>
> > > >>
> > > >>
> > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > > >
> > > >
> > > > ------------------------------------
> > > >
> > > > Be sure to visit the group home and check for new
> Links, Files, and
> > > > Photos:
> > > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Be sure to visit the group home and check for new Links,
> Files, and
> > > Photos:
> > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> > >
> > >
> > >
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links,
> Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>
>

Re: [Homebrew_PCBs] Re: Removing SMDs

2011-07-08 by Henry Liu

Those are not proper SMD heat guns:
http://cgi.ebay.com/2-1-SMD-HOT-AIR-REWORK-SOLDERING-IRON-STATION-852D-/310315592931?pt=LH_DefaultDomain_0&hash=item4840402ce3

Henry

Show quoted textHide quoted text

On Thu, Jul 7, 2011 at 8:32 PM, John Dammeyer <johnd@...>wrote:

> **
>
>
> Specifically which heat gun are you using?
>
> http://www.heat-guns.com/
>
> John
>
> Automation Artisans Inc.
> http://www.autoartisans.com/ELS/
> Ph. 1 250 544 4950
>
> > -----Original Message-----
> > From: Homebrew_PCBs@yahoogroups.com
> > [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of Henry Liu
> > Sent: Thursday, July 07, 2011 7:10 PM
> > To: Homebrew_PCBs@yahoogroups.com
>
> > Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
> >
> >
> > I just squirt solder flux out of the syringe on all the pins,
> > turn up the
> > air gun to high and shoot hot air from the top and pick the
> > part up with
> > tweezers 20secs or so later. Hot air heats all the pads up
> > at once. Solder
> > flux isolates the area affected by the hot air. It's really
> > simple and a
> > hot air gun is around $100.
> >
> > A lot of smd parts have pads underneath such as thermal pads
> > and qfn chips
> > and these are also no problem with a hot air gun.
> > Henry
> >
> > On Thu, Jul 7, 2011 at 6:45 PM, Donald H Locker
> > <dhlocker@...>wrote:
> >
> > > **
> > >
> > >
> > > I "recently" removed a 144-pin LQFP with XActo knife, iron
> > and braid. If
> > > you have pics or a video of removing such a critter with
> > iron and hot air in
> > > 20 sec, I'd live to see it. I spend the better part of 15
> > minutes on that
> > > part.
> > >
> > > Donald.
> > > --
> > > *Plain Text* email -- it's an accessibility issue
> > > () no proprietary attachments; no html mail
> > > /\ ascii ribbon campaign - <www.asciiribbon.org>
> > >
> > >
> > > ----- Original Message -----
> > > > From: "Henry Liu" <henryjliu@...>
> > > > To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> > > > Sent: Thursday, July 7, 2011 8:38:54 PM
> > > > Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
> > > > Hot air gun/soldering station combo is around $100 new
> > off ebay and is
> > > > probably the best solution.
> > > >
> > > > Using hot air and flux in syringe I can remove most SMD components
> > > > including 200 pin qpfs in 20sec or less.
> > > >
> > > > Low melt solder is ok except it's still easier to use the hot air
> > > > which has no cleanup.
> > > >
> > > > Henry
> > > >
> > > > On Thu, Jul 7, 2011 at 1:27 PM, Mark Mickelsen
> > <msmickelsen@...>
> > > > wrote:
> > > > > Could you please post a link to the picture of the
> > "forked soldering
> > > > > iron
> > > > > tip". I looked on site, but didn't see anything with the name
> > > > > "Andrew" or
> > > > > any cover pictures that looked like it. I'm probably
> > blind, but I'd
> > > > > like to
> > > > > see the pictures.
> > > > > Thanks,
> > > > > Mark
> > > > >
> > > > > On Thu, Jul 7, 2011 at 8:24 AM, Andrew
> > <a_wake@...> wrote:
> > > > >
> > > > >> **
> > > > >>
> > > > >>
> > > > >> Two or three months ago I posted a picture of a
> > "forked" soldering
> > > > >> iron tip
> > > > >> that I made -- I was asking if I had come up with
> > something new, or
> > > > >> merely
> > > > >> re-invented the wheel. Not surprisingly, it was the
> > latter ... but
> > > > >> all the
> > > > >> same, it is a GREAT tool for removing SMD devices. The only
> > > > >> downside is that
> > > > >> it is made to fit one particular profile. Since I have
> > the copper
> > > > >> and the
> > > > >> machine shop, I'll probably eventually make a few
> > other profiles to
> > > > >> fit the
> > > > >> other SMD components that I tend to use.
> > > > >>
> > > > >>
> > > > >> --- In Homebrew_PCBs@yahoogroups.com, "Peter Leybourne"
> > > > >> <peter.ley08@...>
> > > > >> wrote:
> > > > >> >
> > > > >> > Somebody may have mentioned this.....
> > > > >> > I saw somewhere an article with a soldering iron
> > 'tip' extension
> > > > >> > made in
> > > > >> the
> > > > >> > shape of a two pronged fork. Several extensions were made as
> > > > >> > needed for
> > > > >> > different size/shape components.
> > > > >> >
> > > > >> > Peter
> > > > >> > MM5PSL
> > > > >> >
> > > > >>
> > > > >>
> > > > >>
> > > > >
> > > > >
> > > > > [Non-text portions of this message have been removed]
> > > > >
> > > > >
> > > > >
> > > > > ------------------------------------
> > > > >
> > > > > Be sure to visit the group home and check for new
> > Links, Files, and
> > > > > Photos:
> > > > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > > ------------------------------------
> > > >
> > > > Be sure to visit the group home and check for new Links,
> > Files, and
> > > > Photos:
> > > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> > > >
> > > >
> > > >
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > ------------------------------------
> >
> > Be sure to visit the group home and check for new Links,
> > Files, and Photos:
> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> >
> >
> >
> >
>
>
>

[Non-text portions of this message have been removed]

Re: [Homebrew_PCBs] Re: Removing SMDs

2011-07-08 by Kamal Shankar

A SMD station with iron for $90 shipped is too good to be true!

Perhaps the body is made of plastic that would melt on heating and usage of more than 10 minutes at a stretch (not unusual for SMD rework)

Anyone has experiences with such cheap stations?

Show quoted textHide quoted text

----- Original Message -----
> From: Henry Liu <henryjliu@...>
> To: Homebrew_PCBs@yahoogroups.com
> Cc:
> Sent: Thursday, July 7, 2011 8:38 PM
> Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
>
>T hose are not proper SMD heat guns:
> http://cgi.ebay.com/2-1-SMD-HOT-AIR-REWORK-SOLDERING-IRON-STATION-852D-/310315592931?pt=LH_DefaultDomain_0&hash=item4840402ce3
>
> Henry

Re: [Homebrew_PCBs] Re: Removing SMDs

2011-07-08 by Henry Liu

I've had this one for over 2 years and it has never failed me.
Henry

Show quoted textHide quoted text

On Thu, Jul 7, 2011 at 10:18 PM, Kamal Shankar <kbshankar2000@...>wrote:

> **
>
>
> A SMD station with iron for $90 shipped is too good to be true!
>
> Perhaps the body is made of plastic that would melt on heating and usage of
> more than 10 minutes at a stretch (not unusual for SMD rework)
>
> Anyone has experiences with such cheap stations?
>
>
> ----- Original Message -----
> > From: Henry Liu <henryjliu@...>
> > To: Homebrew_PCBs@yahoogroups.com
> > Cc:
> > Sent: Thursday, July 7, 2011 8:38 PM
> > Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
> >
> >T hose are not proper SMD heat guns:
>
> >
> http://cgi.ebay.com/2-1-SMD-HOT-AIR-REWORK-SOLDERING-IRON-STATION-852D-/310315592931?pt=LH_DefaultDomain_0&hash=item4840402ce3
> >
> > Henry
>
>
>

[Non-text portions of this message have been removed]

Re: [Homebrew_PCBs] Re: Removing SMDs

2011-07-08 by Kamal Shankar

That's some good feedback then.

What's your usage like?

What's the body made of?

Can you use it for soldering without overheating parts of the surrounding PCB substrate too?

Show quoted textHide quoted text

----- Original Message -----
> From: Henry Liu <henryjliu@...>
> To: Homebrew_PCBs@yahoogroups.com
> Cc:
> Sent: Thursday, July 7, 2011 10:19 PM
> Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
>
> I've had this one for over 2 years and it has never failed me.
> Henry

RE: [Homebrew_PCBs] Re: Removing SMDs

2011-07-08 by John Dammeyer

I have one similar to that but with the Quad and SOIC tips. Takes me
longer than 20 seconds to remove a 28 SOIC. Haven't tried to remove a
QFP44 just yet. Love to see a YouTube video of you removing a 200 pin
device in 20 seconds. Be interesting to see what flow and temperature you
are using. I'm always worried about making it too hot.

John

Automation Artisans Inc.
http://www.autoartisans.com/ELS/
Ph. 1 250 544 4950

Show quoted textHide quoted text

> -----Original Message-----
> From: Homebrew_PCBs@yahoogroups.com
> [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of Henry Liu
> Sent: Thursday, July 07, 2011 8:39 PM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
>
>
> Those are not proper SMD heat guns:
> http://cgi.ebay.com/2-1-SMD-HOT-AIR-REWORK-SOLDERING-IRON-STAT
> ION-852D-/310315592931?pt=LH_DefaultDomain_0&hash=item4840402ce3
>
> Henry
>
> On Thu, Jul 7, 2011 at 8:32 PM, John Dammeyer
> <johnd@...>wrote:
>
> > **
> >
> >
> > Specifically which heat gun are you using?
> >
> > http://www.heat-guns.com/
> >
> > John
> >
> > Automation Artisans Inc.
> > http://www.autoartisans.com/ELS/
> > Ph. 1 250 544 4950
> >
> > > -----Original Message-----
> > > From: Homebrew_PCBs@yahoogroups.com
> > > [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of Henry Liu
> > > Sent: Thursday, July 07, 2011 7:10 PM
> > > To: Homebrew_PCBs@yahoogroups.com
> >
> > > Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
> > >
> > >
> > > I just squirt solder flux out of the syringe on all the pins,
> > > turn up the
> > > air gun to high and shoot hot air from the top and pick the
> > > part up with
> > > tweezers 20secs or so later. Hot air heats all the pads up
> > > at once. Solder
> > > flux isolates the area affected by the hot air. It's really
> > > simple and a
> > > hot air gun is around $100.
> > >
> > > A lot of smd parts have pads underneath such as thermal pads
> > > and qfn chips
> > > and these are also no problem with a hot air gun.
> > > Henry
> > >
> > > On Thu, Jul 7, 2011 at 6:45 PM, Donald H Locker
> > > <dhlocker@...>wrote:
> > >
> > > > **
> > > >
> > > >
> > > > I "recently" removed a 144-pin LQFP with XActo knife, iron
> > > and braid. If
> > > > you have pics or a video of removing such a critter with
> > > iron and hot air in
> > > > 20 sec, I'd live to see it. I spend the better part of 15
> > > minutes on that
> > > > part.
> > > >
> > > > Donald.
> > > > --
> > > > *Plain Text* email -- it's an accessibility issue
> > > > () no proprietary attachments; no html mail
> > > > /\ ascii ribbon campaign - <www.asciiribbon.org>
> > > >
> > > >
> > > > ----- Original Message -----
> > > > > From: "Henry Liu" <henryjliu@...>
> > > > > To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> > > > > Sent: Thursday, July 7, 2011 8:38:54 PM
> > > > > Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
> > > > > Hot air gun/soldering station combo is around $100 new
> > > off ebay and is
> > > > > probably the best solution.
> > > > >
> > > > > Using hot air and flux in syringe I can remove most
> SMD components
> > > > > including 200 pin qpfs in 20sec or less.
> > > > >
> > > > > Low melt solder is ok except it's still easier to use
> the hot air
> > > > > which has no cleanup.
> > > > >
> > > > > Henry
> > > > >
> > > > > On Thu, Jul 7, 2011 at 1:27 PM, Mark Mickelsen
> > > <msmickelsen@...>
> > > > > wrote:
> > > > > > Could you please post a link to the picture of the
> > > "forked soldering
> > > > > > iron
> > > > > > tip". I looked on site, but didn't see anything
> with the name
> > > > > > "Andrew" or
> > > > > > any cover pictures that looked like it. I'm probably
> > > blind, but I'd
> > > > > > like to
> > > > > > see the pictures.
> > > > > > Thanks,
> > > > > > Mark
> > > > > >
> > > > > > On Thu, Jul 7, 2011 at 8:24 AM, Andrew
> > > <a_wake@...> wrote:
> > > > > >
> > > > > >> **
> > > > > >>
> > > > > >>
> > > > > >> Two or three months ago I posted a picture of a
> > > "forked" soldering
> > > > > >> iron tip
> > > > > >> that I made -- I was asking if I had come up with
> > > something new, or
> > > > > >> merely
> > > > > >> re-invented the wheel. Not surprisingly, it was the
> > > latter ... but
> > > > > >> all the
> > > > > >> same, it is a GREAT tool for removing SMD devices. The only
> > > > > >> downside is that
> > > > > >> it is made to fit one particular profile. Since I have
> > > the copper
> > > > > >> and the
> > > > > >> machine shop, I'll probably eventually make a few
> > > other profiles to
> > > > > >> fit the
> > > > > >> other SMD components that I tend to use.
> > > > > >>
> > > > > >>
> > > > > >> --- In Homebrew_PCBs@yahoogroups.com, "Peter Leybourne"
> > > > > >> <peter.ley08@...>
> > > > > >> wrote:
> > > > > >> >
> > > > > >> > Somebody may have mentioned this.....
> > > > > >> > I saw somewhere an article with a soldering iron
> > > 'tip' extension
> > > > > >> > made in
> > > > > >> the
> > > > > >> > shape of a two pronged fork. Several extensions
> were made as
> > > > > >> > needed for
> > > > > >> > different size/shape components.
> > > > > >> >
> > > > > >> > Peter
> > > > > >> > MM5PSL
> > > > > >> >
> > > > > >>
> > > > > >>
> > > > > >>
> > > > > >
> > > > > >
> > > > > > [Non-text portions of this message have been removed]
> > > > > >
> > > > > >
> > > > > >
> > > > > > ------------------------------------
> > > > > >
> > > > > > Be sure to visit the group home and check for new
> > > Links, Files, and
> > > > > > Photos:
> > > > > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo!
> Groups Links
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > > ------------------------------------
> > > > >
> > > > > Be sure to visit the group home and check for new Links,
> > > Files, and
> > > > > Photos:
> > > > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Be sure to visit the group home and check for new Links,
> > > Files, and Photos:
> > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links,
> Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>
>

Re: [Homebrew_PCBs] Re: Removing SMDs

2011-07-08 by Leon Heller

On 07/07/2011 21:27, Mark Mickelsen wrote:

> Could you please post a link to the picture of the "forked soldering iron
> tip". I looked on site, but didn't see anything with the name "Andrew" or
> any cover pictures that looked like it. I'm probably blind, but I'd like to
> see the pictures.
> Thanks,

Metcal makes cartridges with "slot tips" for different size devices. See
page 11 in this catalogue:

http://www.okinternational.com/binary/catalogs/Metcal%20Catalogue%202006.pdf

Leon
--
Leon Heller
G1HSM

Re: Removing SMDs

2011-07-08 by rmu_scada_nw

Anyone wanting to scavenge surface mount parts (especially
resistors and capacitors) might want to look into the Tenma
brand tweezers. I purchased mine from MCM Electronics
(www.mcmelectronics.com) and they have worked out fine for me.
They are not very sturdy but should be OK for occasional use.
You have to buy the different tips separately.

MCM part #21-8230, normally around $30.00 but sometimes
on sale for about half that.

They also have some really pricey models ~$200.00 if you've
got a money tree growing out back.

Re: Removing SMDs

2011-07-15 by Jan Vorlicek

If you want to scavenge components, the best way I've found is to use 150W or stronger infrared bulb about a centimeter over the board. In less than a minute, you can just start picking up or brushing off the components. You can get this bulb in a shop with stuff for animals (they are used for heating terrariums).
The good about this way is that you can cover parts that you don't want to remove or parts that would be destroyed by the heat like connectors by aluminium foil and they would be protected from the heating, since the infrared heats only dark stuff.

I've also used that for soldering QFN part once. There are professional IR soldering stations on the market that use the same principle, but have optics for focussing the IR light in them and also lamps with smaller emission cone.

It also works with regular 50W halogen bulbs, although you have to put the lamp much closer to the components, only few millimeter away from it.

Thanks,

Jan

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--- In Homebrew_PCBs@yahoogroups.com, "rmu_scada_nw" <rmu_scada_nw@...> wrote:
>
>
>
>
>
>
>
>
>
>
> Anyone wanting to scavenge surface mount parts (especially
> resistors and capacitors) might want to look into the Tenma
> brand tweezers. I purchased mine from MCM Electronics
> (www.mcmelectronics.com) and they have worked out fine for me.
> They are not very sturdy but should be OK for occasional use.
> You have to buy the different tips separately.
>
> MCM part #21-8230, normally around $30.00 but sometimes
> on sale for about half that.
>
> They also have some really pricey models ~$200.00 if you've
> got a money tree growing out back.
>