The stuff at hd does have a uv side... the model is...
LEXAN XL-1 sheet
and on the lable it says to "expose this side out"...
the bar code is 26941 13101 5
31-GE XL1 **10 .093 CLR
lesko
hey trev. did you get my email about the lilly?
jeff
LEXAN XL-1 sheet
and on the lable it says to "expose this side out"...
the bar code is 26941 13101 5
31-GE XL1 **10 .093 CLR
lesko
hey trev. did you get my email about the lilly?
jeff
The home depot around here quit carrying lexan long ago...all we get is Optix brand stuff that's not worth the time. Lowes carries the same. I'll have to see what the lowes and home depot up in seattle carry next time I'm up there.
Or you go with no tempered glass at all look at these results by hertzblaster he's using a 250 watt bulb though and his first fresnel is a little warped but just look at the bright clear images among the best of the diy projectors
http://www.hertzblaster.statichost.co.uk/myresults.htm
and his projector design
http://www.hertzblaster.statichost.co.uk/Myprojector.htm
http://www.hertzblaster.statichost.co.uk/myresults.htm
and his projector design
http://www.hertzblaster.statichost.co.uk/Myprojector.htm
Some questions about glass😀
Does anyone know of a place on the web that can custom make a small piece of tempered glass for one part?
What type of heat can regular glass, Annealed glass and tempered glass be expected to take without cracking?
Can or will regular glass warp under the heat of a high wattage halogen?
Does anyone know of a place on the web that can custom make a small piece of tempered glass for one part?
What type of heat can regular glass, Annealed glass and tempered glass be expected to take without cracking?
Can or will regular glass warp under the heat of a high wattage halogen?

Anyway, after a few days of searching I found some answers for a couple of the questions I asked.
This information might be of use for others so I am posting it.
I couldn't find anybody or site to come up with a temp rating for regular pane type glass.
Tempered Glass is heat resistant to 400-500 degrees F .
Neocreram it can take temps to 1292 degrees F and resistant to temp shock, I was told it has an amber tint to it though.
If something had to be real hot light the shell of a bulb Vycor has superior optical qualities and take temps to 2100 degrees F!
Annealed glass seems to be used mostly to prevent art work from cracking.
www.bgglass.com
In my application I am placing a shield about 4" from a EYB 360 watt bulb and choose to go with a tempered piece of glass.
I ordered a custom size of 3/16" tempered from a place called One Day Glass the ordering process was up front and simple to order even my single piece I required. I placed a basic order list online then called the next day to find out shipping cost and give payment info and confirmation. 😉
One Day Glass

This information might be of use for others so I am posting it.
I couldn't find anybody or site to come up with a temp rating for regular pane type glass.
Tempered Glass is heat resistant to 400-500 degrees F .
Neocreram it can take temps to 1292 degrees F and resistant to temp shock, I was told it has an amber tint to it though.
If something had to be real hot light the shell of a bulb Vycor has superior optical qualities and take temps to 2100 degrees F!

Annealed glass seems to be used mostly to prevent art work from cracking.
www.bgglass.com
In my application I am placing a shield about 4" from a EYB 360 watt bulb and choose to go with a tempered piece of glass.
I ordered a custom size of 3/16" tempered from a place called One Day Glass the ordering process was up front and simple to order even my single piece I required. I placed a basic order list online then called the next day to find out shipping cost and give payment info and confirmation. 😉
One Day Glass
To tell if your OHP has tempered glass, this may help you...
From HowStuffWorks.com
From HowStuffWorks.com
You can easily spot tempered safety glass in an automobile rear windows on a sunny day if you are wearing polarized sunglasses. Tilt your head 90 degrees or so and you will see a symmetrical pattern in the glass created during its tempering process.
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