[sdiy] SMD rework equipment

[sleepy_dog at gmx.de]

Ah, yeah that wasn't clear maybe, I was assuming boards which are made 
with hand-soldering considered. I wouldn't make super tight boards with 
components which are hard to solder without desoldering the *same* 
component at the other pad unless you use a tiny tip. I find that too 
much effort. Also, I can get 2-layer boards made much cheaper at a place 
which can only do 9..10 mil clearance or so anyway with their old tech 
(it barely works for QFP, with a modified, thinned pattern, but it 
allegedly does),
which is nicer if I have to pay for it, not the employer ;-)

Steve


Am 20.05.2016 um 17:30 schrieb Jay Schwichtenberg:
> Having good tools and knowing how to do SMDs is one thing and can get a
> pretty good job done.
>
> But the to me the real critical part of doing SMDs is having good eyes and a
> steady hand.
>
> I don't mind doing boards that are SMD meant to be hand soldered verses ones
> that were made for machine assembly. Hand soldered ones can use 0805/1206
> parts and spread them out. Machine ones usually have 0603s close together. I
> have some MI boards and they look doable by hand. But it's going to take
> some planning to solder without problems. A lot of the parts are close
> together and if you solder one side of one part you'll probably unsolder the
> connected side of another part.
>
> Good luck.
> Jay S.
>
> -----Original Message-----
> From: Synth-diy [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of
> sleepy_dog at gmx.de
> Sent: Friday, May 20, 2016 4:25 AM
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] SMD rework equipment
>
>
> Ha!
>
> And I thought  I'm the only one (besides that lively Aussie dude on YT,
> and one EE friend) who does his QFP (incl. single pins -> wire) and 0603
> soldering with a 3mm chisel tip :-D
> And pointy tips *sniff* only for crowded in-case situations. I'm not a
> pro, can only say, for me, this works nicely, and I find pointy tips
> mostly a PITA to work with.
>
> Interesting mention of webcams as cheap microscope replacement here... I
> might want to try that one out. So far I've done things like, put on
> ballistic eye glasses and have my eyes real close to the PCB :-D
>
> Steve
>
> Am 20.05.2016 um 09:04 schrieb Roman Sowa:
>> The best iron is the one you are feeling comfortable with. Sharp tips
>> give you access to very dense areas, but they can't give much heat so
>> working on something bigger than 0402 is not so fun. Has it's use only
>> where nonthing else can reach. Regular tip and flux gel make wonders.
>> Stereovision microscope is a must. Magnifying glass leads to dizzyness
>> and headaches, cameras introduce lag and noise and are only 2D, also
>> not very nice.
>> Also helpful: hot tweezers with set of tips for various tasks,
>> preheater when you have huge board with a lot of copperfill,
>> soldersucker for cleaning holes from solder, solderwick for cleaning
>> SMD pads, and good supply of flux gel, maybe also Kapton tape for
>> protecting near-by-rework area, especially when using hotair gun. And
>> hot air of course, very popular in rework services, but I never used
>> it. Did I mention flux gel?
>>
>> Roman
>>
>> W dniu 2016-05-20 o 02:09, Jason Proctor pisze:
>>> thanks for the info, all.
>>>
>>> i have a Weller WTCPT iron, which has been a trusty servant. can i make
>>> this iron more suitable for SMT stuff, or are other irons (i see Metcal
>>> is popular) just more appropriate?
>>>
>>> any tips for steadying oldish hands while doing delicate work? i did
>>> wonder whether our EMS had a setup where nothing was hand-held. do such
>>> arrangements exist?
>>>
>>> thanks much!
>>> Jason
>>>
>>>
>>> On Thu, May 19, 2016 at 4:57 PM, charlie wallace
>>> <charlie at finitemonkeys.com <mailto:charlie at finitemonkeys.com>> wrote:
>>>
>>>      Trinocular boom from amscope with usb camera or a mantis from eBay
>>>      Metcal from eBay
>>>      Solder sucker
>>>      Wiha esd tweezer set
>>>      Chip quik
>>>
>>>      On May 19, 2016 4:54 PM, "MTG" <grant at musictechnologiesgroup.com
>>>      <mailto:grant at musictechnologiesgroup.com>> wrote:
>>>
>>>          +1 on the scope, -1 on the USB camera.  And I have exactly the
>>>          same situation regarding taking *my* scope to work and back.
>>>          They actually have one at work but it has no light.  I use 10x
>>>          most of the time on the microscope and rarely x30.  My scope was
>>>          not much over $100 USD and I've no complaints.
>>>
>>>          www.amscope.com <http://www.amscope.com>
>>>
>>>          GB
>>>
>>>          On 5/19/2016 4:35 PM, Gordonjcp wrote:
>>>
>>>
>>>              Binocular microscope is great, cheapy USB camera
>>>
>>>          > microscope is perfectly okay (we use them at work
>>>          > when I take *my* binocular microscope home), decent
>>>          > non-magnetic tweezers and a good soldering iron with
>>>
>>>              not too small a point.
>>>
>>>
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