Archive of the former Yahoo!Groups mailing list: Homebrew PCBs
Subject: Re: [Homebrew_PCBs] Setting exposure with a step gauge
From: DJ Delorie <dj@...>
Date: 2009-06-03
Looks like you got the exposure just right. Are you using some type
of vacuum hold-down? I found I had to do something about that because
the weight of the glass was insufficient to hold the film tight
against the board.