Sounds like a great project.
Try to source thick plate glass, say 1/2" from a glass supplier. They could cut it to size.
I had a go with some 4" blanks years ago -great fun.
Best part was building a knife-edge tester & seeing paterns that described the mirror surface, fascinating!
I recommend starting with 4", dont aim for a fixed focal lenth -leave that for the next trial & go from there. The whole process is really simple yet exacting.
Look on the net for mirror grinding kit suppliers. They are not to expensive.
Good Luck and have fun.
Last edited by theodog; 24-12-2008 at 10:12 PM.
Reason: sp
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