>From: "John Craddock" <John.Craddock@...>
>Reply-To: Homebrew_PCBs@yahoogroups.com
>To: <Homebrew_PCBs@yahoogroups.com>
>Subject: RE: [Homebrew_PCBs] Narrowest tracks?
>Date: Mon, 26 May 2003 23:30:55 +1000
>
>Hello all,
>I presume from the replies so far, all respondents use photo-resists. I
>have these questions.
>
>What brand?
>What type? liquid or dry film
I buy my PCB material ready coated with positive resist, supplied by Mega
Electronics, UK. I think it is roller applied, according to the description
- 5 micron thick - then high-temp. cured.
>What polarity? positive or negative.
Positive. I develop in NaOH.
Leon
--
Leon Heller, G1HSM Tel: +44 1424 423947
Email:
leon_heller@...My web page:
http://www.geocities.com/leon_heller_________________________________________________________________
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