Homebrew PCBs

On Tue, 24 May 2005 13:37:47 -0700, Terry Mickelson <tmdslca@...>  
wrote:

>
> Firstly, I have a hot press and with some picture papers, 275 degrees
> at 3 to 5 minutes seems to work reasonably well. Double sided boards
> are a problem to do because of the need to do both sides at once. A
> piece of double sided PC board is placed on the heat press's pad.
> Next is a sheet of paper, then artwork, board, artwork, sheet of
> paper, top of heat press. It works but the results are uneven and not
> repeatable. The major problem is a clean board and I've tried
> everything except paint thinner, which is next. In the meantime a UV
> box was built but I haven't decided on a printer yet. Maybe an Epson
> C86 ? I just don't know.
> T


I do believe presses are a problem with unevenness.

Get a old fuser unit or a laminator, it works well.
Maybe some soft material in the press under the board might help enough.

cleaning the board: sand with 600 or 1000 grit paper, just enough to get  
sanding marks everywhere. then wipe twice with alcohol or acetone and a  
paper tissue, done.

ST