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A good starter size is the 150 mm (6") mirror. A 200mm (8") will also work. Most ATM books and websites recommend a Pyrex® mirror blank, but in my opinion, annealed plate glass is better for this first, "learn and practice" mirror.It is cheaper, it is softer …
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grinding aids globalspec Subsco. Milling and grinding media are designed for ball milling and the grinding down of bulk, powder or granular materials into finer powder forms or Portable Grinding Machine Products GlobalSpec Description: Save time sanding and polishing 4 …
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Welcome to my channel - in this video, we will begin to make a telescope mirror from scratch! I'll be showing you the basics of telescope mirror grinding!Her...
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In regular visits through the winter I began the grinding, polishing, and figuring the mirror blank to astronomical standards. After forty-five hours of my "pushing glass," the experts declared the mirror finished once it reached 1/6 wavelength through Foucault testing. I sent the mirror to Majestic Optical for coating (Al/SiO). It was back within a…
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Products/Services for Parabolic Mirror Grinding Machines. Grinders and Grinding Machines - (985 companies) Grinders and grinding machines use an abrasive that is bonded to a wheel, belt or disc to remove material and improve surface finish. Devices can be pneumatically driven or powered by a combustion engine or electric motor.
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spin grinding a slumped mirror - posted in ATM, Optics and DIY Forum: so after taking a few years off from the hobby to get my wife well i have completed my spin grinder and am ready to tackle the 14 honeycombed mirror that you see as my avatar i had it fused to shape many years ago and it is slumped to an F5 curve. i have not used a spin grinder as yet all my work has been done by hand or ...
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It is not a robot, but just a pattern of polishing. For big aperture though, spinning a large mirror and moving a large polisher might be too much work. That is why the mirror lab spun caste their glass to avoid hogging, and then had a robot go around grinding and polishing the high spots. Or maybe they spun ground it.
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is my father's garage where he is currently working on his telescope hobby. The Diamond curve generating machine in this vi...
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Just grinding the telescope mirror probably took 80-100 hours for me, but I was learning a lot and taking my time. I'm entering this into the Hand Tools Only Contest because when I did this project that's all I had! Add Tip Ask Question Comment Download. Supplies.
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mirror surfaces with very low surface roughness independent of the direction of measurement could be obtained. 2.2 Grinding of cylindrical mirrors The methods using a cup wheel for grinding the mirrors are schematically illustrated in Fig. 1. In Figs. 1 (a)
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Re: Building a fixed post mirror grinding machine. I I had a nice piece of 3/4" stainless dowel that was begging to be used. So I bought a cheap pillow block to provide the locator for the metal dowel, and then drilled the overarm to fit. These pillow blocks are $8 and come complete with a locking collar - great deal.
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The curve is ground into the mirror face using a grinding tool. The curve is pre-generated for you. The curve is created by slumping the blank in a kiln over a mold. Here are 42 inch [107cm] and 30 inch [762cm] mirrors slumped and annealed to F2.8 ready for fine grinding.
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Grinding a Mirror "For it is true that astronomy, from a popular standpoint, is handicapped by the inability of the average workman to own an expensive astronomical telescope. It is also true that if an amateur starts out to build a telescope just for fun he will find, before his labors are over, that he has become seriously interested in the wonderful mechanism of our universe.
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Rough Grinding in the great outdoors at the Stellafane Mirror Class (October 2002 Stellafane Mirror Class) Telescope Making Workshops and Seminars. Links to World Wide Mirror Class Listings. Link to the Stellafane Mirror Class. Astronomy Conventions & Star Parties
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A good starter size is the 150 mm (6") mirror. A 200mm (8") will also work. Most ATM books and websites recommend a Pyrex® mirror blank, but in my opinion, annealed plate glass is better for this first, "learn and practice" mirror.It is cheaper, it is softer and grinds faster, needing less abrasives and with these small sizes, the low expansion glass like Pyrex has no practical (visible at ...
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Hot Tanned Ass Grinding and Twerking!! What do you think? Related Videos. 1:17. Hot Lady Twerking! Enjoy! Best Twerking Videos · October 4, 2013. 1:55. Ass Twerk What do you think? Best Twerking Videos · September 26, 2013. 2:54. Hot Twerking and …
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CIMFREE® VG-991M metalworking fluid is recommended for a wide variety ofmedium-duty machining and grinding operations including turning, drilling, tapping, reaming and aluminum wire drawing. CIMFREE® VG-MF5350 is a medium to heavy-duty "Green" metalforming oil designed specifically for tight radius applications.
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Page 1 of 2 - Fixed Post Grinder/Polisher Build - posted in ATM, Optics and DIY Forum: Hey all: As my winter project I have a pile of glass Id like to work my way through (a couple of 6, a couple of 8, a 10 and a 12) all with the ambition of working my way up to large thin meniscus mirrors. Ive hand ground/polished an 8 and a 9 previously, so Id like to construct and learn how to make short FL ...
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Find Mirror Grinding Machine related suppliers, manufacturers, products and specifications on GlobalSpec - a trusted source of Mirror Grinding Machine information.
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31 The curve is ground into the mirror face using a grinding tool. The curve is pre-generated for …
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Description: best results, we hand-polish our parabolic mirrors from large aluminum blanks and finish them to an accuracy of 1/20 lambda RMS. Our standard mirrors come in diameters between 2.5 and 10 inches and curvatures 15, 30, 45 and 60 degrees off-axis. We also provide off-axis Mirror Types: Parabolic Mirror; Reflector / Parabolic Mirror Shape: Off-axis Parabolic
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IEC 6 REDLINE and similar electrical appliances – Safety – Part 2-34: Particular requirements for motor-compressors Revision: 2021 edition • Published 03/01/2021. This part of IEC 60335 deals with the safety of sealed (hermetic and semi-hermetic type) motor-compressors, their protection and control systems, if any, which are intended for use in equipment for ...
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Step 2: Blend. Use a Norton Vortex Rapid Blend disc to blend out scratches from your material removal step. Vortex Rapid Blend discs are made of nylon fibres, and lay the foundations for a bright finish to your stainless steel piece. Reduce the speed to 5 – 6,000 RPM and use slow, even strokes at a 10 - 15 degree angle to impart a consistent ...
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Page 2 of 5 - Making a Mirror grinding & Polishing machine - posted in ATM, Optics and DIY Forum: The machine I made is just driven by a drill press and pulley system. Variable speeds could be nice, but so far this system has worked. The turntable goes about 40 RPM for spin grinding and polishing, which works quite well. I can add a reduction and the table then goes about 6.5 RPM, which …
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