grinding mirror fine

Joy of Mirror Making: Fine Grinding - BBAstroDesigns

2022-1-6 · 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

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FINE GRINDING THE MIRROR - sidewalkastronomers.us

2020-5-7 · FINE GRINDING THE MIRROR. After generating the mirror curve by rough grinding it remains for us to smooth it by fine grinding and polishing before finally correcting it to a parabola of revolution. Fine grinding is done in about the same way as the last wets of rough grinding, but with a series of finer and finer grits such as 100, 220, 320 ...

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China Grinding Mirror, Grinding Mirror Manufacturers ...

China Grinding Mirror manufacturers - Select 2022 high quality Grinding Mirror products in best price from certified Chinese Ceramics, China Tile suppliers, wholesalers and

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Fine and Intermediate Grinding of Your Mirror | Guy's

2014-12-15 · Grinding, Grit, Mirror. 3. Grinding (intermediate and fine): Once you have reached your goal for the sagitta, and inspected it, then it’s time to move on to the next smaller grit size and to a more conventional grinding technique. First of all, throw away all of the used newspaper, rinse out the water bucket, wipe off and put away the grit ...

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Joy of Mirror Making: Rough Grinding - BBAstroDesigns

31 行 · 2022-1-6 · The center will deepen during the first stage of fine grinding

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Mirror grinding_Shenzhen Shuguang Precision Machinery

Mirror grinding-Shenzhen Shuguang Precision Machinery Co., Ltd. -Mirror grinding (mirror processing) is a process that uses fine abrasive particles to evenly trim the unevenness of the workpiece surface to nanometer level. It is the highest state of metal cutting and ...

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Stellafane ATM: Fine Grinding

Before You Start. Use this checklist to make sure you are ready to start fine grinding: You have completed Rough Grinding, and all the tools and materials used in rough grinding, most of which are also used in fine grinding.; You have the

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Newport Glass Works, LTD. Grinding, Polishing and

2014-7-21 · Grinding the back flat is just the first step in preventing astigmatism. The next step is the proper mirror support. Fine grind and polish the mirror face up. A thin mirror bends over the edge of the tool if it's worked on top, so the problem reduces to

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Surface figure control in fine rotation grinding process ...

2018-6-15 · Fine rotation grinding (FRG) is a typical efficient method for silicon mirror manufacture. A geometric model is developed in this paper to research silicon mirror surface figure control mechanism in FRG process. The model demonstrates the relationship between the grinding spindle obliquity and the mirror surface figure.

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Basics of Mirror Grinding

2009-2-2 · The initial rough grinding process uses grit sizes of 60, 120, and 180 to carve out the basic spherical cavity. The mirror is then fine ground with grits of sizes ranging from 220-900. In both grinding processes, the grit is harder than the mirror blank and tool, resulting in a concave mirror and complementary convex tool.

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Newport Glass Works, LTD. Grinding, Polishing and

2014-7-21 · Grinding the back flat is just the first step in preventing astigmatism. The next step is the proper mirror support. Fine grind and polish the mirror face up. A thin mirror bends over the edge of the tool if it's worked on top, so the problem reduces to

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tut44 Making A Mirror Grinding Tool - Asterism.org

2019-3-8 · After fine grinding is complete, the mirror must be polished. It is during polishing that you “figure” the mirror by using a different polishing stroke to change the mirror’s spherical polished shape into a parabolic polished shape . See a related tutorial nearby titled, “ Making A Mirror Polishing And Figuring Tool ”.

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Grinding mirror using CNC router - ATM, Optics and DIY ...

2010-2-22 · Page 1 of 3 - Grinding mirror using CNC router - posted in ATM, Optics and DIY Forum: I am thinking of grinding mirror on CNC router. I already have a 6 pyrex blank, dedicated to this project. ... I guess I will have to do fine grinding, but I won't have an appropriate grinding tool because I skipped rough grinding.

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Thin Telescope Mirror Grinding Advice

2016-9-14 · Grinding thin telescope mirror blanks: Thin glass mirror making techniques differ only slightly from "standard" mirror making practices. Keep these principals in mind when grinding and polishing your thin mirror blank, and you'll be fine. Also, be sure to support your thin mirror properly in the telescope: FORCE

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Grinding mirror using CNC router - Page 3 - ATM, Optics ...

2016-8-22 · Took 38 minutes for rough grinding with concentric circles, spaced by 4 mm and took 39 minutes for fine grinding using downward spiral with 0.5mm radius decrement. Here is the finished product. Attached Thumbnails. PrestonE, photomagica, Juzwuz and 2 others like this.

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grinding an optical flat mirror

2021-5-15 · Fine grinding. A flatness in the range of 1 µm can be reached by grinding three glass blanks alternatingly against each other, blank 1 on 2, 2 on 3, 3 on 1, and so on. This will be continued with each Carbo grade. After fine

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Ed Grinds a Mirror - scopereviews

2002-1-25 · Working Like Hell: My Mirror Grinding Station Our Great Guru looked at my work, and said, "Say, you're pretty fast." Then, ominously, he waved the blank at me. "Next time we'll see if this is a half- assed job." Chapter Two: Grinding With the 120 Grit, June 11, 2000 My mirror is hyperbolic. In my zeal to achieve an f/8 curve so quickly, I ...

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Stellafane ATM: Grits, Polish & Pitch

For hand grinding, the coarse grit sequence of 40, 60 , 80, 120, 220 is typical (start at the grit size appropriate for your mirror diameter as given in the section above). Silicon Carbide is used almost exclusively. Fine grit sequences vary more, and

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Surface figure control in fine rotation grinding process ...

2018-6-15 · Fine rotation grinding (FRG) is a typical efficient method for silicon mirror manufacture. A geometric model is developed in this paper to research silicon mirror surface figure control mechanism in FRG process. The model demonstrates the relationship between the grinding spindle obliquity and the mirror surface figure.

Read More

Basics of Mirror Grinding

2009-2-2 · The initial rough grinding process uses grit sizes of 60, 120, and 180 to carve out the basic spherical cavity. The mirror is then fine ground with grits of sizes ranging from 220-900. In both grinding processes, the grit is harder than the mirror blank and tool, resulting in a concave mirror and complementary convex tool.

Read More

Thin Telescope Mirror Grinding Advice

2016-9-14 · Grinding thin telescope mirror blanks: Thin glass mirror making techniques differ only slightly from "standard" mirror making practices. Keep these principals in mind when grinding and polishing your thin mirror blank, and you'll be fine. Also, be sure to support your thin mirror properly in the telescope: FORCE

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Grind and Polish a Dobsonian/Newtonian Telescope Mirror ...

Now, you'll use the normal stroke as in fine grinding and polishing agent to get the surface of your mirror super smooth. It's best to do these sessions in at least 1ish hour increments - the polish works better after 10-15 min of warming up from

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Grinding mirror using CNC router - ATM, Optics and DIY ...

2010-2-22 · Page 1 of 3 - Grinding mirror using CNC router - posted in ATM, Optics and DIY Forum: I am thinking of grinding mirror on CNC router. I already have a 6 pyrex blank, dedicated to this project. ... I guess I will have to do fine grinding, but I won't have an appropriate grinding tool because I skipped rough grinding.

Read More

tut44 Making A Mirror Grinding Tool - Asterism.org

2019-3-8 · After fine grinding is complete, the mirror must be polished. It is during polishing that you “figure” the mirror by using a different polishing stroke to change the mirror’s spherical polished shape into a parabolic polished shape . See a related tutorial nearby titled, “ Making A Mirror Polishing And Figuring Tool ”.

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Grinding and Polishing a Meniscus Mirror – Astronomy ...

2017-10-17 · Grinding and Polishing a Meniscus Mirror. In many respects, the grinding and polishing stages of fabricating a thin meniscus telescope mirror are not different from any telescope mirror. There are lots of resources, online and in print, describing that. This article will focus on the specific issues introduced by working on such a mirror.

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Ed Grinds a Mirror - scopereviews

2002-1-25 · Working Like Hell: My Mirror Grinding Station Our Great Guru looked at my work, and said, "Say, you're pretty fast." Then, ominously, he waved the blank at me. "Next time we'll see if this is a half- assed job." Chapter Two: Grinding With the 120 Grit, June 11, 2000 My mirror is hyperbolic. In my zeal to achieve an f/8 curve so quickly, I ...

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Mirror Grinding Machine | Hackaday

2006-9-26 · Mirror Grinding Machine. The true test of the amateur astronomer is building their own telescope. Grinding and polishing your own mirrors is a long, arduous process. Instead of lapping the blank ...

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Making a Mirror. - Astronomy

2012-4-5 · Second is to smooth out the pits to the point where the mirror can be polished. This part is fine grinding. Third is the polishing of the mirror. This part removes all of the pits and makes a smooth surface on the glass. Fourth is figuring the mirror. This part puts a particular shape on the mirror so that it conforms to the requirements of the ...

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