Homebrew PCBs

I never try this, but I read from some article (i've forgotten where) that problem is from your ink printer...and the article advised to use epson ink..

--- On Thu, 7/3/08, Michel Baguet <bagmik@...> wrote:
From: Michel Baguet <bagmik@...>
Subject: Re: [Homebrew_PCBs] double sided PCB, accuracy
To: Homebrew_PCBs@yahoogroups.com
Date: Thursday, July 3, 2008, 11:04 PM










    
            Well, line up is not a problem. it's the transparent getting deformed when heated.



--- On Fri, 7/4/08, DJ Delorie <dj@...> wrote:

From: DJ Delorie <dj@...>

Subject: Re: [Homebrew_PCBs] double sided PCB, accuracy

To: Homebrew_PCBs@ yahoogroups. com

Date: Friday, July 4, 2008, 5:50 AM



What I've been doing is including a "target" in my prints (four 25 mil



squares in a square, with a 1 mil gap - that translates to a 1 mil ink



crosshair when I print negatives).  I print this on all photomasks and



one on plain paper.  The plain paper one I use to pre-drill 16 mil



holes at each crosshair.  Then, when exposing, I can line up the holes



with the crosshairs pretty accurately, and double-check through the



glass overlay.



	

	 

	

	



	



	

	



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