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----- Original Message -----
From: "derekhawkins" <eldata@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Friday, September 15, 2006 3:37 AM
Subject: [Homebrew_PCBs] Re: UV exposure boxes
> >The kalex box has light and dark patches.
>
> Tubes are probably spaced too far apart. I started with this;
>
> http://www.pbase.com/eldata/image/52324065
>
> Then went to this to ensure that would never be a problem;
>
> http://www.pbase.com/eldata/image/52321530
I just use two tubes quite far apart, but the distance from the PCB is quite
large giving uniform illumination.
Leon