Homebrew PCBs

On Fri, 15 Sep 2006 13:51:20 +0200, Leon Heller  
<leon.heller@...> wrote:

>
> I think that is the case. That's why ordinary glass is OK for UV exposure
> boxes, it doesn't absorb the longer wavelength UV. I used Perspex at  
> first,
> thinking it mattered.
> Leon


isn't perspex much less transparent to uv than window glass?
I'm not sure at which wavelengths though.

ST