There are many ways to curve generate a telescope mirror. Each method is performed to make the mirror concave and the tool convex. You are finished when the mirror is the correct depth and the mirror and tool move over each other in spherical contact ...
Joy of Mirror Making: Rough Grinding
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Joy of Mirror Making: Rough Grinding
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Making a homemade mirror grinding machine - ATM, Optics and DIY Forum - Cloudy Nights
I and my telescope
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Mirror Grinding Machine
File:Home made telescope mirror, grinding phase, diameter=400mm.jpg - Wikimedia Commons
mirror grinder page
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File:Home made telescope mirror, grinding phase, diameter=150mm.jpg - Wikimedia Commons
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