Homebrew_PCBs

When I broke my laminator, I got disgusted and put the iron on it's highest setting and set it on the paper.

This browned the paper. After letting it cool off I started to pull the paper up on a corner, and the toner hadn't stuck, so I gave up that avenue. I figured I needed higher pressure to do the transfer.

Then after I got my laminator fixed I needed a test board to send through, so I grabbed that one. When I went to pull the paper the rest of the way off, the (dry non soaked in water) paper pulled away and left the toner on the board.

OK....

I have also noticed that if I leave the toner on a TTed board for a few days, then try to clean it off with acetone, it doesn't particularly want to come off.

I'm wondering if I could use a couple heated plates and a clamping mechanism and forgo the laminator step. Do we really need the point load from the rollers?

Thoughts? Anybody messed with a press like this?

If you want to use a press, you need something heat resistant (but still
heat conductive) yet flexible, to put between the paper and the hot
plate, so that every bit of toner gets equal pressure. You still have
to make sure the toner gets hot enough to be plastic, but not hot enough
to be liquid. Bonus points if you can keep pressure on the paper until
after it cools a bit.

Yes.

I was thinking cut up a silicone baking mat:
http://www.amazon.com/dp/B00009A9WU/?tag=thecelpho-20

A couple aluminum plates, some stove heating elements using "photonic energy transfer", I.E., radiant heat transfer, some thermistors to sense the heat, a couple comparators, and two $8 solid state relays from Surplus Center.

All of which I have in the junk pile.

Simple way to apply the pressure would be four spring loaded wing nuts, one in each corner. Maybe in slots for easy removal.

Other methods come to mind as well. Halogen bulbs pr lights for the heat source, cheap Chinese arbor press for the pressure.

--- In Homebrew_PCBs@yahoogroups.com, DJ Delorie <dj@...> wrote:
>
> If you want to use a press, you need something heat resistant (but still
> heat conductive) yet flexible, to put between the paper and the hot
> plate, so that every bit of toner gets equal pressure. You still have
> to make sure the toner gets hot enough to be plastic, but not hot enough
> to be liquid. Bonus points if you can keep pressure on the paper until
> after it cools a bit.
>

--- In Homebrew_PCBs@yahoogroups.com, "rlspell2000" <rls@...> wrote:

>
> Yes.
>
> I was thinking cut up a silicone baking mat:
> http://www.amazon.com/dp/B00009A9WU/?tag=thecelpho-20
>
> A couple aluminum plates, some stove heating elements using "photonic energy transfer", I.E., radiant heat transfer, some thermistors to sense the heat, a couple comparators, and two $8 solid state relays from Surplus Center.

Sounds like an Electric Tortilla Maker/press -

http://www.amazon.com/Saachi-Tortilla-Bread-Temperature-Control/dp/B000RZJN3I/ref=sr_1_5?ie=UTF8&s=home-garden&qid=1272890275&sr=1-5

AT $43 a laminator is less expensive and works! Don't see the need for anything for TT... Maybe I'm missing something?

Ken

> Sounds like an Electric Tortilla Maker/press -
>
> http://www.amazon.com/Saachi-Tortilla-Bread-Temperature-Control/dp/B000RZJN3I/ref=sr_1_5?ie=UTF8&s=home-garden&qid=1272890275&sr=1-5
>

sailingto pravi:

>
>
> AT $43 a laminator is less expensive and works! Don't see the need for
> anything for TT... Maybe I'm missing something?
>
> Ken
>
> > Sounds like an Electric Tortilla Maker/press -
> >
> >
> http://www.amazon.com/Saachi-Tortilla-Bread-Temperature-Control/dp/B000RZJN3I/ref=sr_1_5?ie=UTF8&s=home-garden&qid=1272890275&sr=1-5
> <http://www.amazon.com/Saachi-Tortilla-Bread-Temperature-Control/dp/B000RZJN3I/ref=sr_1_5?ie=UTF8&s=home-garden&qid=1272890275&sr=1-5>
> >
>
> __._,_.

Someone here was try to do that. But Can't be called success.,.
1. The rubber mate stinks when heated...
2. The heat up time is long as thick backplate must be heated up
3. The pressure is uneven as rubber havent same thickness (neither PCB clad)
4. The pressure is too low even if plate is pressed with 6 ton hydraulic
press. (cheapest laminator put more force)

~~~ conclusion ~~~ Buy cheapest laminator and hack thermal regulation to
rise temperature somevhere in 180 to 200 degres celsius.

Slavko.

At 07:40 AM 5/3/2010, you wrote:

>Sounds like an Electric Tortilla Maker/press -

don't know what temp these kinds of presses go to but i've been using
a t-shirt transfer press with great success for years. temp goes to
over 500 degrees, has adjustable pressure and heat dwell time. but
not cheap unless you can find a used one.

William Alford

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

--- In Homebrew_PCBs@yahoogroups.com, "sailingto" <sailingtoo@...> wrote:

>
> AT $43 a laminator is less expensive and works! Don't see the need for anything for TT... Maybe I'm missing something?
>
> Ken
>
> > Sounds like an Electric Tortilla Maker/press -
> >
> > http://www.amazon.com/Saachi-Tortilla-Bread-Temperature-Control/dp/B000RZJN3I/ref=sr_1_5?ie=UTF8&s=home-garden&qid=1272890275&sr=1-5
> >
>

Hell, I just stole the ex girlfriend's hair-straightener, and haven't had much problems since. :)

Jeremy

Hey my GF has one of those, does it really work ?







Best Regards,

Steve Maroney



Business Computer Support, LLC

Mobile Phone:504-914-4704

Office Phone: 504-904-0266

Fax: 866-871-7797





From: Homebrew_PCBs@yahoogroups.com
[mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of cboy2us
Sent: Monday, May 03, 2010 2:35 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Re: musings on a TT press







--- In Homebrew_PCBs@yahoogroups.com
<mailto:Homebrew_PCBs%40yahoogroups.com> , "sailingto" <sailingtoo@...>
wrote:

>
> AT $43 a laminator is less expensive and works! Don't see the need for

anything for TT... Maybe I'm missing something?

>
> Ken
>
> > Sounds like an Electric Tortilla Maker/press -
> >
> >

http://www.amazon.com/Saachi-Tortilla-Bread-Temperature-Control/dp/B000R
ZJN3I/ref=sr_1_5?ie=UTF8&s=home-garden&qid=1272890275&sr=1-5

> >
>

Hell, I just stole the ex girlfriend's hair-straightener, and haven't
had much problems since. :)

Jeremy





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

I've tried two of them, one had bigger plates, and no real heat control, just two elements and a diode to rectify mains through the elements for the low setting. That one didn't seem to get hot enough. Her new one at the time, however, did :D. It's a Remington wet2straight s-7900t (130 watts)

--- In Homebrew_PCBs@yahoogroups.com, "Steve Maroney" <steve@...> wrote:
>
> Hey my GF has one of those, does it really work ?
>
>
>
>
>
>
>
> Best Regards,
>
> Steve Maroney
>
>
>
> Business Computer Support, LLC
>
> Mobile Phone:504-914-4704
>
> Office Phone: 504-904-0266
>
> Fax: 866-871-7797
>
>
>
>
>
> From: Homebrew_PCBs@yahoogroups.com
> [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of cboy2us
> Sent: Monday, May 03, 2010 2:35 PM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: [Homebrew_PCBs] Re: musings on a TT press
>
>
>
>
>
>
>
> --- In Homebrew_PCBs@yahoogroups.com
> <mailto:Homebrew_PCBs%40yahoogroups.com> , "sailingto" <sailingtoo@>
> wrote:
> >
> > AT $43 a laminator is less expensive and works! Don't see the need for
> anything for TT... Maybe I'm missing something?
> >
> > Ken
> >
> > > Sounds like an Electric Tortilla Maker/press -
> > >
> > >
> http://www.amazon.com/Saachi-Tortilla-Bread-Temperature-Control/dp/B000R
> ZJN3I/ref=sr_1_5?ie=UTF8&s=home-garden&qid=1272890275&sr=1-5
> > >
> >
>
> Hell, I just stole the ex girlfriend's hair-straightener, and haven't
> had much problems since. :)
>
> Jeremy
>
>
>
>
>
> [Non-text portions of this message have been removed]
>

--- In Homebrew_PCBs@yahoogroups.com, William <walford@...> wrote:

>
> At 07:40 AM 5/3/2010, you wrote:
>
> >Sounds like an Electric Tortilla Maker/press -
>
>
> don't know what temp these kinds of presses go to but i've been using
> a t-shirt transfer press with great success for years. temp goes to
> over 500 degrees, has adjustable pressure and heat dwell time. but
> not cheap unless you can find a used one.
>
> William Alford

Hi: I'm new to this group, and as a retired Photographer, I still have a "SEAL" Drymount press. This is used for drymounting photographs. Is this compareable to the "T Shirt" press.

Thanks,

Harvey McRae.

>

At 09:40 PM 5/5/2010, Harris Creek Central. wrote:

>
> have a "SEAL" Drymount press. This is used for drymounting
> photographs. Is this compareable to the "T Shirt" press.

yes, i've used those as well in photography, but it's been a long
time. i think the difference will be that the T-shirt press has
pressure adjustment with leveraged arm that can apply great pressure
to the substrate. but it's certainly worth a try! i ran the tshirt
press at around 350 degrees and i don't recall what temp the drymount
goe to but likely not that high since it might damage the
photographs. try some experiments and let us know the results.


William Alford

GI Motility Medical Research Page
http://alford.grimtrojan.com/

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