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Subject: Re: [Homebrew_PCBs] Re: vacuum hold-down for exposure box

From: DJ Delorie <dj@...>
Date: 2009-03-23

KeepIt SimpleStupid <keepitsimplestupid@...> writes:
> I printed with a laser printer, so no problems.

Hmmm... I tried using the laser printer for UV exposure, but (1) the
toner didn't block much UV, and (2) the resolution was poor compared
to my inkjet. With the laser, the best I could do was 7 mil or so.

Plus, aren't you supposed to put the ink side ∗towards∗ the board, to
avoid the extra 8 mil or so distance which may blur the edges some?
The whole point of this is to get the image (ink) as close to the
photomask as possible, to get the cleanest edges.