On Mon, 22 Feb 1999 06:35:34 -0800, you wrote:

>Hello. It depends what you call large size. I used The stuff from Keypro before but the developer stuff is very dangerous to handle and better wear a mask, so I gave up. I use now some boards from Circuits Specialist in California. Their boards are positive pre-sensitized and their developer is cheap and easy to use.  Circuits Specialist at www.circ.com
>
>-----Original Message-----
>From:   Brian Gracia [SMTP:bgracia@RTRIPP.COM]
>Sent:   Sunday, February 21, 1999 9:42 PM
>To:     PICLIST@MITVMA.MIT.EDU
>Subject:        Pre-Sensitized circuit boards
>
>Hello,
>
>Does anyone have a source for large size Pre-Sensitized circuit
>boards.  What I have seen is very expensive.  A company call Keypro
>used to do these.  They also sold a spray to make your own.  Anyone
>have a source for this spray?
>
>Brian
How large - MEGA in the UK do up to 0.5 x 1.1 Metre sheets, 
cost is ukp44.80 for single-side, 52 for double (1ukp = about US$1.6)
Need a pretty big UV box & etch tank, though :-)