Telescope Mirror Making: Part 3, Rough Grinding. After hogging the mirror blank to depth, the rough grinding stage begins. In this video I am grinding with 60/90 grit. The wets are lasting about 90 seconds to 2 minutes.
Tags: Telescope Mirror Making: Part 3, Rough Grinding, Telescope, mirror, making, DIY, amatuer, machining, meade, celestron, lathe, milling, machine, mirror-o-matic