>         Has anyone tried etching a board, using a negative made by
> printing
> from a laser printer onto acetate, in reverse (light for dark, dark for
> light)?  I layed out a board single sided, so I could expose and etch it
> myself at home.  But I haven't tried to make one yet, and I wondered if
> it could be done without an actual negative.
>
I have tried this, and it sort of works, but my results left a lot
to be desired.  For some reason, I have better results when
I use the positive process. Maybe your printer is better at printing
large areas of "dark" than mine (HP 1600C).

For getting a negative image (and a positive image image, either
by starting with a negative or by doing the process twice), i have
found that Datak Pos-Neg film works really well. The contrast is
orders of magnitude better. I think I got mine from Electronix Express.


Phil Eisermann
H:(440) 284-3787 (mazer@ix.netcom.com)
O:(440) 329-4680 (peiserma@ridgid.com)