Steve,
Thanks for the reply!
Actually, I already tried using a higher temperature. I'm not really sure WHAT the true temperature is of the press is, since the knob and the thermometer don't agree, although I tend to believe the thermometer. (I guess I should measure it with a second thermometer...)
It turned out that the temperature didn't seem to be the problem. As someone else mentions farther below, apparently correctly, the problem seemed to be the uneven contact between the pattern/board and the inside of the heated lid of the press, or, rather, the sheet of metal that I put between them, which was too thin and deformed around the board edges, causing it to bend away from parts of the inner portions of the boards. The parts of the boards that DID work perfectly seemed to indicate that the temperature was fine at around 300 degF. So I'm getting ready to give it another try, with a thicker sheet of metal between the lid and the boards.
Thanks again!
Regards,
Tom Gootee
http://www.fullnet.com/u/tomg-----------------------------------
Message: 3
Date: Fri, 16 Jul 2004 16:33:36 -0000
From: "Steve" <
alienrelics@...>
Subject: Re: Anybody tried a large flatbed laminator for toner transfer?
I have a dumb question- is there any reason not to try bumping the
temp up a bit?
Alex is right, that press could sell for quite a bit on eBay. 350F is
a bit low for a Tshirt press, though, but that is big.
I've heard of people doing Toner Transfer using a heat press, but
never had anyone say they needed to go to such lengths. I have a
Tshirt press, smaller but goes up to over 400F, and just got a laser
printer again.
Steve
--- In
Homebrew_PCBs@yahoogroups.com, "Thomas P. Gootee" <tomg@f...>
wrote:
> I was looking for a better way to make larger lots of pcboards at a
time when I remembered that several years ago I had "accidentally"
purchased a fairly large laminating machine at a gov't surplus
auction. It's a "Commercial 210M" model, made by Seal. The bed and
heated lid/press's mating surfaces are flat and measure about 18 x 22
inches.
>
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