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Subject: Re: [Homebrew_PCBs] Comments onInkjet printing of PCB's

From: Alan King <alan@...>
Date: 2006-04-11

>Anything come to mind?
>
>How about the spray on photoresist?
>
>It can be thinned down with a suitible solvent.
>Dries slowly.
>Post cured with UV.
>A thick coating is not needed to survive the exposing
>and developing process.
>A thin coating that is cured and directly etched is
>all that is needed.
>
>
>

Developing should only be needed for one side of the process. Making
sure to use the pos or neg resist so the printed and UV cured portion is
the side that stays, then developer shouldn't be needed since there'll
be no negative side left to remove. There's UV cure loctite and other
things to try too. Worth a try right before paraffin, since that'll
never come out easily lol.. Of course, this now makes 500,002 things to
do..

Alan

PS I finally got my CNC back up and running for use, likely won't have
time to document it much until after the convention in late May. Have
two sets of boards paid for but not sent in, gotta send something soon
so may finish off the stepper controller and have 16 boards made up..