How are you camera making dudes making the ground glass. I'm not to that point yet, but in the next month or so I'll need an 11x14 chunk of the stuff. I have used an abrasive blaster in the past, but the grain was too coarse to get good resolution from the lens.
cheers,
chriso

Here are a few interesting links. David Prifti did a demo on this a few Jamborees ago.

[www.apug.org]
[www.dokasphotos.com]

That works! thanks!.
chriso

This is a good source for ground glass:

Steve Hopf's Ground Glass Store
Brilliant Ground Glass is hand ground to perfection for fine grained, low grit image projection. I offer ground glass for camera viewing screens in a wide variety of formats such as 4x5, 5x7, 8x10, 11x14, and Ultra Large Format sizes. Custom sizes are available too!



[ELLERID" rel="nofollow" >myworld.ebay.com]

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Edited 1 time(s). Last edit at 01/01/2012 08:57AM by Ray Morgenweck.

make it yourself
rays advice is spot on,
When you buy the grit you will be able to make
a replacement for your ground glass.
If you are in the field and need a replacement, it could save you a days shoot....

...one time, at a medium size reenactment in Rhode Island...some 'helpful' soldier carried my camera back from group shoot, and dropped it. The ground glass broke. DAMN. This was like 5:45 PM and I RUSHED into town, a little town, found the only hardware store there...with this brainless kid working there. He knew nothing about grit, valve grinding compound....but he DID have sandpaper.

I got a sheet of glass, some cheap sandpaper..went back, wet down the sandpaper, and by sheer determination managed to make a quite respectable ground glass there, at night, in my tent. Next morning, in it went, and its STILL in the camera!

Just bought some 400 Grit Silicon Carbide from this place- Jesco Products
Made my first ground glass yesterday. Easy and it worked great.