Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

----- Original Message -----
From: "Jonathan W" <n0ym@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Saturday, May 24, 2003 5:35 AM
Subject: [Homebrew_PCBs] Re: Creating a professional looking solder stopp
mask
>
> In a small semiconductor research lab in which I work, we regularly
> apply photoresist to silicon wafers using a spinner. Is there some
> reason such a process, using a clamped PCB board and a
> servo-controlled motor, couldn't work for applying liquid photoresist
> to copper-clad boards, as well? Seems to me almost a homebrew solution.

This technique used to be used a lot for coating PCBs (before the adoption
of film resist), and I've heard of people using it at home with an ordinary
motor. Something like a large cardboard box is advisable to stop the room
and contents from being coated, as well. 8-)

Leon
--
Leon Heller, G1HSM
leon_heller@...
http://www.geocities.com/leon_heller