[jodyl2]

Question about glass.. I want to make sure all light is coming through, the last unit took forever.
Does the thickness of glass make a difference of time needed to expose image? If there are scratches on glass do they show yp in image?
Also the water....
There was a post about hard water and difficulty burning image... does that have an affect??? Thanks

 

[shawnkspringhill]

I know you want low iron glass, usually special order.
If theres green tine to the edges thats got iron. Thickness i believe you want 3/8 to 1/4
Heres good info on glass for exposure
Selecting the Right Glass for Exposure Units | ScreenWeb | screenweb.com