Archive of the former Yahoo!Groups mailing list: Homebrew PCBs
Subject: Re: [Homebrew_PCBs] RE: Re: Application method for Liquid Soldermask (UV cured ink)
From: Slavko Kocjancic <eslavko@...>
Date: 2013-11-26
When you expose board with mask the ink harden. But if mask isn't full
black (the laser print isn't full black) then there is practice to not
expose too long time as unwanted area may be exposed too. So you just
keep the swet spot when difference exposed/unexposed is big enought to
wash the unwanted ink off. Then you expose developed board again to
fully harden the ink.