Spin Casting A Slumping Mold For Fast Telescope Mirrors - 2nd Attempt
30:47
12 inch f4.9 Telescope Mirror Part 4
21:06
Casting a lightweight hexagon back glass telesope mirror
4:20
An unfortunate repair meets a master jeweller.
32:26
12 inch f4.9 Telescope Mirror Part 2
1:10:16
Casting a light weight telescope mirror (all steps in the process)
16:50
12 inch f4.9 Telescope Mirror Part 3
16:32
Spin Casting A Slumping Mold For Fast Telescope Mirrors
32:52