Homebrew PCBs

I think maybe a hot plate with a thermocouple on the copper of the 
board. I'll do some tests this weekend.

I'm going to take and post some pictures in the next few days.

Mark


At 01:26 PM 4/3/2008, you wrote:
>Hi Mark,
>
>If you are using a hotplate, the contact between it and the PCB affects the
>PCB's temperature.  In that case, you also ought to have a cover that
>matches the hotplate temperature (good contact).  That then in effect forms
>a mini-oven with uniform temperature.
>
>
>
>It might be more convenient to have an oven with proper air circulation and
>independently of the oven temperature control, attach a thermocouple to the
>bottom of the PCB to monitor its temperature.
>
>
>
>Do you have any pictures of the modified laser printer?
>
>Bertho
>
>
>
>From:  Mark Lerman     Sent: Thursday, April 03, 2008 08:39
>Bertho,
>
>I wouldn't have thought that opto interruptors would be that
>repeatable. I'm going to run a sheet of paper through a laser printer
>twice and see how well duplicate images register - a rough measure of
>what's easily accomplishable.
>
>I just bought a pid controller - going to put it on a hot plate and
>see what happens. Or maybe an oven? Which is better for smt soldering?
>
>Mark
>
>
>
>
>
>[Non-text portions of this message have been removed]
>
>
>------------------------------------
>
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>
>
>