Homebrew PCBs

On Fri, 15 Sep 2006 18:06:34 +0200, derekhawkins <eldata@...> wrote:

>
> Don't know about perspex but on this side of the pond there can be at
> least two types of plexiglass from the same manufacturer. One
> states "Transparent to light" and the other states "Blocks UV rays" or
> something similar. Hardware stores (eg. Home Depot) normally have them
> displayed next to each other, so one should be careful in choosing the
> right one for an exposure box.


You are probably talking about PC (polycarbonate, lexan) and PMMA (acrylic  
glass, plexiglass).

 From what i read polycarbonate is filtering out UV and PMMA is passing  
everything straight through.
I may be misinformed though.


ST