Homebrew PCBs

David Griffith wrote:
> How effective are UV exposure units in the form of two 12-inch tubes 
> mounted on a board and suspended over the workbench?  The approach I'm 
> tinkering with now is a pair of polycarbonate sheets hinged on one side. 
> Align and clamp the PCB and artwork in the device, then place under the 
> lamp to cook, then flip and cook the other side.  Comments?
>
>   
Perhaps I am misunderstanding what you are saying.  Are you planning on 
exposing the boards through the polycarbonate sheets?  Polycarbonate 
blocks 100% UV.

Kerry