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From: randys@mipon3.intel.com (Randy Steck)
Newsgroups: sci.electronics,comp.sys.apple
Subject: Re: PC board photo etching kits
Message-ID: <865@omepd>
Date: Thu, 9-Jul-87 21:18:46 EDT
Article-I.D.: omepd.865
Posted: Thu Jul  9 21:18:46 1987
Date-Received: Sun, 12-Jul-87 11:56:07 EDT
References: <2392@uwmcsd1.UUCP> <2868@mit-hermes.AI.MIT.EDU>
Sender: news@omepd
Reply-To: randys@mipon3.UUCP (Randy Steck)
Organization: Intel Corp., Hillsboro
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Xref: mnetor sci.electronics:929 comp.sys.apple:1951

In article <2868@mit-hermes.AI.MIT.EDU> jpexg@mit-hermes.AI.MIT.EDU (John Purbrick) writes:
>Handling the board by its edges, pour a uniform coating of resist over it.
>Tip it back and forth, and let as much of the resist drip off as you can, the
>idea now being to get a very thin coating. It helps to warm the board (with a
>heat gun if you have one) as this makes the resist flow better, but use some 
>caution as the resist may well be flammable. Again, dry on edge away from
>dust. 

Another method that gives very good results is to mount the board on a
rotating platform while pouring/spraying the resist on.  This gives a thin
coating of resist, depending on the viscosity of the resist and how fast
you are spinning it.  An electric drill with variable speed works well
here.

-- Randy Steck
   Intel Corp.       ...intelca!mipos3!omepd!mipon3!randys