Cutting 8in blank from stock sheet

New 4 spindle polishing machine fit in shop

Three machines lines up.Twin table, Porter and 4 s

Grinding 3 different mirrors sizes. 17", 8", and 1

One more view of my 17" on the Porter, a students

This poor shadowgram was taken after the 12.5" was

The shadowgram of my 17" is after the rough grind

Cut 13in from bottom

2 13in blanks cut from stock 1in glass

Strange tempered stress pattern in 12.5in mirror b

Rochi band test on new video monitor hooked up to

7 band Ronchi test..checking for spherical surface

Newly cut 13in mirror blank on gouging table prepa

GRinding in the curve on the Porter machine

Doing a sharpie test prior ro fine grinding a 13in

Grinding on new machine a 13in mirror..pushing the