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 · Mirror Grinding Machine posted in ATM Optics and DIY Forum I have some interest in building a grinding machine for possible up to an 18 mirror but something that will also do a 6 or 8 mirror I have plans for the Mir O Matic but would like to do something a bit more modern I have some ideas about using a AC drive and a large aluminum disk for the turntable and have made a parts list

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 · What are the best sources for mirror blanks posted in ATM Optics and DIY Forum Ever since I found Stellafanes mirror making page Ive been itching to build my own telescope Im going to start with a 6 8in Newt the classic beginning ATM project All I need now are the materials I can find the yogurt containers pretty easily For the rest of it I had to do a little searching

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Any dimming or brightning of the light indicated that the grinding was not uniform Total time spent beveling the edge of the mirror grinding the mirror and cleaning up between grits was about 90 hours over a two and half month period about 1 to 2 hours of work a day Again I did about twice as many wets as called for to grind the mirror

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 · The machine is shown grinding a 300 mm mirror How to build a tachometer http florin myip org blog making ta

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Aluminium oxide grinding powder per kilo 40AUD Tin oxide grinding powder per kilo 30AUD Pumice grinding powder per kilo 30AUD 80 Grade grinding powder per 8 mirror 2AUD 120 2AUD 220 3AUD 320 4AUD 500 6AUD 1000 8AUD

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MIRROR GRINDING MACHINE I made my first mirror grinding and polishing machine over thirty years ago It used the working principle of the machine illustrated at A Fig 3 Page 163 Amateur Telescope Making Book 1 A bowl which rotated was fitted to the spindle I also built another machine

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It is a fine looking near full thickness 10 inch diameter blank that I intend to grind and polish into a 1st class telescope mirror Here is a stack of my home made 8 and 10 inch mirror blanks The second from the bottom is the one above I can use the thinner blank below it as the grinding tool UPDATE

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The mirror machine came to me as a result of astronomical horse trading swapping a large GEM mount and a 8 Newtonian OTA for the machine as it was and a start kit consisting of two 6 blanks and the grit rouge and pitch to manufacture a mirror The grinding machine had been built to the design of the mirror o matic design of Dennis Rech