 Re: Questions about building an exposure unit
My exposure unit is something i picked on ebay. It is a Violix exposure unit which came complete with an exposure timer, vacuum frame (for plates) and a vacuum pump for $175.
I modified the vacuum frame designed for plates and converted it to work for screens by adding a wooden spacer and vacuum bladder material purchased off ebay.
The biggest hitch i ran into was over vacuuming the modified frame and broke the glass, but the glass was easily replaced and with a drop in vacuum has been working great since.
Before reinventing the wheel, i'd suggest you first look around at what sort of used commercial equipment might be available.
fred |