> I saw a few replies, did they not pan out? I saw at least one that looked like it was exactly what he was asking for a= s well. >=20 > You might want to get in touch with the homebrew telescope set, as a > fair number of those guys grind their own reflectors, often from > quartz. Apparently it is superior to the more commonly used Pyrex. Another possibility would be your local gemstone collectors clubs. While th= ey tend to polish stones in a tumble drum, I am sure they will also know wh= ere to go for access to suitable diamond saws and how to polish flat surfac= es. --=20 Scanned by iCritical. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .