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mirror grinding popular

Best value mirror grinding machine Great deals on

Woodwork Tool Machine 100Pcs Wool Grinding Carving Burrs Metalworking Mold Mirror Polished Handle Power Tool. New User Deal. US $14.01. + Shipping: US $1.78. WALFRONT Officiali Store.

Mirror grinding scope making

2007-2-13  My favorite method is to grind with the chordal stroke a bit deeper (0.2-0.3 mm on this mirror size) than the target saggita,then use TOT until end of grinding. This saves a lot of grit! As you might noticed by now, much of the grit is wasted as it falls in

Joy of Mirror Making: Rough Grinding BBAstroDesigns

31 行  2020-5-19  The first method is by far the most popular. Grinding the curve into the mirror face

Fast Mirror Grinding & Polishing The ATMs Workshop

2001-11-15  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"

Joy of Mirror Making: Fine Grinding BBAstroDesigns

2017-4-4  Mel Bartels. Fine Grinding. The goals of fine grinding are to prepare the curved mirror face so that it is ready for polishing and figuring and make any adjustments of the focal length. Previously in rough grinding we deepened the center of the mirror's face either by grinding

mirror grinding kit grind and polish telescope mirror

All our Mirror Kits contain a Pilkington Float Glass mirror blank and Grinding Tool. These arefinished with fine ground edges. 180 grade first stage ginding powder. 400 grade ginding powder. 303 grade smoothing powder. Top quality Cerium Oxide Polishing

Fixed post mirror grinder advice DIY Astronomer

2011-11-1  An alternative, which seems very popular with home machine builders, involves rotating the mirror at a relatively high speed whilst the tool has minimal movement or is fixed (as in the case of Gordon W’s machine). The trick is to place a correctly sized tool in the appropriate position to ensure an even grind/polish.

Stellafane ATM: Fine Grinding

A typical grit sequence for an 8" mirror that did rough grinding with #60 grit would be: Silicone Carbide: #80, #120, #220. Aluminum Oxide: 32, 20, 12, 5 micron. Often, #320 Silicon Carbide is used instead of 32 micron Aluminum Oxide, and #500 is used instead of 20 micron; any of these combinations will work well.

Aluminum Mirror-polished aluminum mirror

2021-4-28  The mirror aluminum plate are aluminum plate taking on a mirror effect by rolling, grinding and a variety of methods. Usually abroad the mirror aluminum plates are rolled to produce roll materials or plate; The mirror aluminum plate is just a general

Stellafane ATM Main Page

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.

Best value mirror grinding machine Great deals on

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Mirror Grinding Machine, G. W. Ritchey National Air

2021-1-11  George Willis Ritchey built this mirror grinding machine at the Yerkes Observatory in Williams Bay, Wisconsin, in the late 1890s. Under the sponsorship of George Ellery Hale, the machine was used to grind a series of telescope mirrors starting with a 24-inch and then a 60-inch mirror for a telescope initially intended for the Yerkes Observatory.

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Mirror grinding Hacker News

2017-3-11  The center of the mirror is the most likely to be contacted by any motion, so it is abraded more frequently and becomes the deepest point, while the edges are worn less. The distribution between "less" and "more" is spherical. I can at least understand the process of grinding or lapping a surface flat. Here are a couple examples:

Mirror Finishing MachineMfg

Mirror surface processing is generally refer to a surface with a roughness of <0.8um, and it’s been called: mirror finishing. Processing methods. The mechanical methods for obtaining mirrors are: material removal, no cutting (rolling). Ways to remove materials are: grinding, polishing, and electric sparking.

Fixed post mirror grinder advice DIY Astronomer

2011-11-1  Basically there are two types of grinding/polishing machine. The ‘traditional’ type which involves the mirror rotating at a relatively slow speed, a few rpm for a big mirror (16-20 inches) with the tool moving across the mirror, from side to side, at a higher rpm depending on the size of the mirror

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Hand Grinding a Telescope Mirror Make:

2014-5-30  This is how you make a telescope mirror out of a hunk of glass: Use a sand mixture and another piece of glass to grind away the middle of a concave shape. Repeat with finer and finer grit sand. Dave Barosso demonstrates the technique, but to do it yourself, try to visit one of the Telescope Makers Workshop ‘s classes on Friday nights in Oakland.

Aluminum Mirror-polished aluminum mirror

2021-4-28  The mirror aluminum plate are aluminum plate taking on a mirror effect by rolling, grinding and a variety of methods. Usually abroad the mirror aluminum plates are rolled to produce roll materials or plate; The mirror aluminum plate is just a general term, and in accordance with the surface polish level, it can be classified into three types, i.e. 800 standard polish, 850 high polish and 890

Mel Bartels and BBAstroDesigns

2012-6-5  Interests in deep sky observing and cold camera astrophotography with homebuilt equatorials turned to large thin mirror grinding when I met John Dobson in 1981 and was given a night on John's 24 inch at Crater Lake. I have ground dozens of mirrors up to 30 inch in size and led mirror making classes.

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Mirror grinding Hacker News

2017-3-11  The center of the mirror is the most likely to be contacted by any motion, so it is abraded more frequently and becomes the deepest point, while the edges are worn less. The distribution between "less" and "more" is spherical. I can at least understand the process of grinding or lapping a surface flat. Here are a couple examples:

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Alibaba Manufacturer Directory Suppliers,

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Study on mirror surface grinding of die steel by using

2008-1-1  Study on mirror surface grinding of die steel by using ultrasonically assisted diamond tools Study on mirror surface grinding of die steel by using ultrasonically assisted diamond tools Hara, Keisuke ; Isobe, Hiromi ; Kyusojin, Akira ; Okada, Manabu 2008-01-01 00:00:00 This paper describes Ultrasonically Assisted Grinding (USG) to obtain a glossy surface quickly and precisely.

Fixed post mirror grinder advice DIY Astronomer

2011-11-1  Basically there are two types of grinding/polishing machine. The ‘traditional’ type which involves the mirror rotating at a relatively slow speed, a few rpm for a big mirror (16-20 inches) with the tool moving across the mirror, from side to side, at a higher rpm depending on the size of the mirror

Mirror Finishing MachineMfg

Mirror surface processing is generally refer to a surface with a roughness of <0.8um, and it’s been called: mirror finishing. Processing methods. The mechanical methods for obtaining mirrors are: material removal, no cutting (rolling). Ways to remove materials are: grinding, polishing, and electric sparking.

Hand Grinding a Telescope Mirror Make:

2014-5-30  This is how you make a telescope mirror out of a hunk of glass: Use a sand mixture and another piece of glass to grind away the middle of a concave shape. Repeat with finer and finer grit sand. Dave Barosso demonstrates the technique, but to do it yourself, try to visit one of the Telescope Makers Workshop ‘s classes on Friday nights in Oakland.

Aluminum Mirror-polished aluminum mirror

2021-4-28  The mirror aluminum plate are aluminum plate taking on a mirror effect by rolling, grinding and a variety of methods. Usually abroad the mirror aluminum plates are rolled to produce roll materials or plate; The mirror aluminum plate is just a general term, and in accordance with the surface polish level, it can be classified into three types, i.e. 800 standard polish, 850 high polish and 890

Peripheral grinding wheel Engagement rings,

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