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

----- Original Message -----
From: "tboneuk_2000" <a_reynolds@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, February 05, 2004 12:28 AM
Subject: [Homebrew_PCBs] Re: Dissapearing Tracks in deveoper


> To eliminate the possibility of the uv being stopped by the glass I
> secured the film to the board, placed it in the bottom of the
> exposure unit under the uv tubes and exposed for 14 mins.
>
> Still get no image , thinking the presensitized board is faulty
> allthough it looks the same as some other board I purchased from a
> seperate source at a different time.
>
> anybody use this "fotoboard 2" make before

I use it all the time without any problems.

Ordinary glass is OK with the long-wave UV used for PCB exposure. I use a 13
minute exposure, but have quite a large distance from the tubes. Your
exposure should be much less.


Leon
--
Leon Heller, G1HSM
Email: aqzf13@...
My low-cost Philips LPC210x ARM development system:
http://www.geocities.com/leon_heller/lpc2104.html