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Jun 06, 2021· Popular Posts. DuncanC. May 8, 2021. Hi, After about 15years of thinking about it, I finally got started on my first mirror grind today. I bought a used mirror grinding kit from AstroBuySell which includes a 6" 25mm plate glass blan ... A mirror grinding and polishing machine is a serious time waster. You can put a lot more effort into manual ...
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Rough Grinding. Unless the mirror comes pre-generated, the initial curve will have to be ground into the mirror. A ring tool of half the diameter of the mirror used on top of the mirror's flat face with the coarsest grit will rapidly grind a spherical curve into the mirror. Grinding a 6 inch [15cm] mirror to F/2.8 using a ring tool.
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3. The method of mirror grinding 1. Balancing and dressing the grinding wheel (1) Balance grinding wheel. After the flange is installed on the grinding wheel, the rough static balance is performed first, and then the two end faces and outer circle are trimmed on …
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Fixed-post machine grinding is where the mirror is on a turntable rotating around 20 PRM [speeds vary], and a 75% tool is on top. They are already curve-generated. The tool is hanging over the mirror by 1/6 the diameter of the tool, or about 1/8 diameter of the mirror, and is fixed in this position.
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Nov 15, 2001· The mirror ended up with a very smooth, zone free, nearly spherical figure ready for final figuring. Figure 1: Polishing pads applied to a 9 inch grinding tool. Another local ATM has also tried the polishing pads with abrasive and CeO. His own 17.5" mirror took about nine hours to polish out completely.
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Start with one of our telpe mirror kits. Each kit comes with a telpe mirror blank and all the abrasives (silicon carbide grits and white aluminum oxide powders), cerium oxide polish and pitch to grind and polish it to your specifications. ... If you need materials for making a grinding tool or pitch lap, we have them available on our ...
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Interpretation of term. Mirror surface finishing is the grinding method to polish the metal surface into mirror-like surface by vertical grinding or buff grinding. In order to polish the surface into mirror-like surface, face roughness as well as face accuracy as swelling becomes required. The Company classifies the surface roughness state into ...
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Jan 11, 2022· Grinding tungsten rods on an angle grinder is very fast, but the angle is very difficult to control. So we developed the angle grinder angle controller. It can easily help you precisely control the grinding angle. You can move the slide bar and the tungsten rod will grind in different positions on the wheel.
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Just grinding the telpe mirror probably took 80-100 hours for me, but I was learning a lot and taking my time. ... Yeah, I wouldn't say it's a "lost art" but certainly something that isn't quite as popular as the heyday of the 50s-70s, mostly because good telpe optics are much cheaper than they were at that time. Still a very, very fun ...
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