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22" Mirror Grinding - Reiner Vogel

2016-7-3 · The mirror rested on a piece of carpet and a thick, flat board on a solid table. All the grinding (and polishing) was done tool on top (TOT). I used Carbo grades 180 and 320, Microgrit 15µ, 9µ, 5µ and 3µ (recommendation of Stathis). The tool was matched to the blank with Carbo 180.

Mirror Grinding | Hacker News

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-o-matic Mirror Making Machine - Atm Pages …

2018-5-16 · Mirror-O-Matic grinding machine. When I decided in 2009 after a ten-year break to get into mirror making again, it quickly became clear to me that I would need to construct machine, as hand grinding big mirrors is not something very beneficial for the hands of a musician.

Study On A 5-axis Precision And Mirror Grinding Of …

Study on a 5-axis precision and mirror grinding of glass freeform surface without on-machine wheel-profile truing. ... wheel with abrasive grain size g s =3 μm and abrasive concentration η=75% was employed to perform the final surface grinding with f x =20 μm.

China Super Mirror Polishing /grinding Machine For ...

Wuxi Zhongshuo Machinery Co., Ltd. Polishing Machine, Grinding Machine, Mirror Polishing Machine manufacturer / supplier in China, offering Super Mirror Polishing /Grinding Machine for Staineless Steel, Super 8k Polishing /Grinding Machine for Stainless Steel, Fast Speed No.4 and Hairline Wet Type Grinding/Polishing Machine and so on.

Mirror Grinding Machine | Hackaday

2019-10-5 · Grinding and polishing your own mirrors is a long, arduous process. Instead of lapping the blank by hand, Laurie Hall built this mirror grinding machine from scratch.

Telescope Mirror Blanks / Telescopemirrorblanks.com ...

2016-9-14 · * Thin plate glass mirror blanks are lighter than standard mirror blanks, which allows you more flexibility in designing your telescope tube assembly and mount. * When grinding a telescope mirror, you will find that plate glass takes less time to grind and polish than a mirror made from borosilicate glass. Please see the Buy Telescope Mirror Blanks

A Grinding-based Manufacturing Method For Silicon Wafers …

2004-8-24 · wafer from each grinding condition was to prepare the wafers for Magic Mirror inspections of waviness and grinding marks. ... Please note that the site size was 20 mm!20 mm for Oh and Lee’s data, which is much smaller than the site size (26 mm!33 ...

Casting A $20 Million Mirror For The World’s Largest …

Each mirror costs US $20 million dollars and takes more than two years to build. Every stage of the manufacturing process calls for careful thought and meticulous planning.

Stellafane Atm Main Page

A lot has changed since Russell Porter wrote those words - today the "average workman" can afford to buy an already made telescope and Dobsonian mountings are very popular. Much is also unchanged - mirror grinding techniques are very similar to those written up by Porter and Ingalls in the 20´s and 30´s.

Ed Grinds A Mirror - Www.scopereviews.com

2002-1-25 · The goal on the upcoming Sundays is to get everyone through one entire grit level on one session. What began as a leisurely mirror-grinding exercise is turning into a race against time. Hopefully we have caught this soon enough. Chapter Five: The 30 Micron and 12 Micron Stages, August 20, 2000 This was the first of our double-length sessions ...

Tut44 Making A Mirror Grinding Tool - Asterism.org

2019-3-8 · Walk away for at least 20 minutes. Dental Plaster sets in less than 30 minutes. The surface of the plaster will begin to look dry and will be hard to the touch. 12. Remove the tape around the form allowing the form to unroll. ... tut44 Making A Mirror Grinding Tool

Making The 20 Inch Conical Mirror | Pierre Lemay

Making the 20 inch Conical Mirror. ... part article Dilworth explained how he had used grinding wheels to grind away the excess glass and produce his tapered mirror. I would do the same by grinding away the back of my already tapered glass blank to further reduce the edge thickness from 1” to ½” and I would trepan a 3½” hole for central ...

Abrasive Mirror Grinding Wheel, Abrasive Mirror …

Alibaba.com offers 320 abrasive mirror grinding wheel products. such as free samples. There are 240 abrasive mirror grinding wheel suppliers, mainly located in Asia. The top supplying countries or regions are China, India, and South Korea, which supply 98%, 1%, and 1% of abrasive mirror grinding …

机械院:ultraprecision Elid Mirror Surface Grinding And ...

2018-9-12 · 报告题目:Ultraprecision ELID Mirror Surface Grinding and Polishing of Semiconductor Materials 报告人:大森整 日本理化学研究所教授 时间:2018年9月12日 14:20-14:50 地点:机械与运载工程学院401报告厅

超镜面磨削,ultraprecision Grinding,音标,读音,翻译,英文例句 ...

2018-10-1 · Precision mirror surface grinding with electrolytic In process Dressing is successful in precision mirror surface grinding and efficiency ... 镜面磨削的磨削用量较小,例如磨削外圆时,砂轮速度为15~20米/秒,工件速度小于10米/分,工作台进给速度为50~100 为 ...

Jan Van Gastel: Making A Mirror-o-matic Mirror …

2019-2-13 · Grinding On the picture below the machine is fine grinding an 8 inch mirror with an 71% tool (143 mm diameter) and 9 micron aluminium oxyde. The bent lines on the mirror are the effect of the tool turning - with respect to the mirror - faster at the central part of the mirror as compared to the edge zones.

Study On Ductile-mode Mirror Grinding Of Sic Ceramic ...

An elliptical torus-shaped diamond wheel is proposed to perform a freeform axial-feed grinding of SiC ceramics. In elliptical form-truing, a new mutual-wear between rotary grinding wheel and fixed dresser is developed to produce an elliptical wheel-profile along elliptical interpolation paths.

Telescope Making Supplies - Willbell.com

2019-5-11 · Throughout the grinding and final lapping stages, the objective has been to reduce pits and scratches to the smallest possible size. However, no amount of grinding can produce a surface smooth enough or sufficiently transparent to meet the needs of a first-class telescope objective. Different techniques are needed.

Mirror Surface Grinding Of Steel Bonded Carbides-《high ...

Mirror Surface Grinding of Steel Bonded Carbides 收藏本文 分享 0 IntroductionThesteelbondedcarbide ,composedofsteelma trixandhardcarbideparticles ...

Ky4-iii Sand-belt Mirror Grinding Machine Of Grinding ...

Quality KY4-III Sand-belt Mirror Grinding Machine - find quality Grinding Machine, Plastic Crushing Machines & Grinding Machine from Foshan Keying Machinery Co.Ltd. of China Suppliers - 153951034.

How I Built An Edge Grinder For Telescope Mirror Blanks.

2013-2-26 · How I built an edge grinder for telescope mirror blanks. ... The large circle is cut from a 20 inch diameter tabletop. I really only cut the rounded edge off of it so that it now has a square edge, which will be needed later for mounting a dam. ... I borrowed a few ideas from the Mirror-O-Matic mirror grinding machine, particularly how to mount ...

Mirror Grinding Machine-runout - Atm, Optics And …

2015-2-21 · Page 1 of 2 - Mirror grinding machine-runout - posted in ATM, Optics and DIY Forum: I am in the process of making a fixed post mirror grinding machine, big enough for a 20 inch mirror. I have now got the motor, pulleys, two shafts and turntable all together and working. The turntable rotates at around 25 rpm,which I think should be OK. If I put a dial indicator on the top of the table near the ...

精密镜面磨削,precision Mirror Surface Grinding,音标,读音,翻译 ...

2018-10-1 · In order to find a new way to machine the material of stainless steel precisionly, using a new kind of technology-electrolytic in-process dressing precision mirror surface grinding, we realized precision mirror surface grinding of HR-1 anti-hydrogenation stainless steel.

Waite Research Telescope Mirrors :: Home - Mirror …

Ronchi and Foucault Tests on the 20" f/4.5 Quartz Telescope Mirror (added 04/29/10) Figuring a 20" Mirror, Part 1: Reducing a High Zone. Figuring a 20" Mirror, Part 2: Smoothing and Blending Techniques. Making a Ceramic Tile and Dental Plaster Grinding Tool. Rough Polishing the 20" f/4.5 Telescope Mirror. Measuring the Radius on the 20" Mirror

Mirror Grinding Machine Plans - Mine-equipments.com

Mirror-o-Matic mirror making machine - ATM pages of Berthold ... Mirror-O-Matic grinding machine... was that all measurements and plans are done in imperial units since the …

Mirror Grinding Machine | Crusher Mills, Cone …

Mirror grinding machine [Archive] – The Home Shop Machinist … Have any of you ever built one of these? I have a 3hp motor and a 20:1 worm drive that I think could probably be used for such a device.

Mirror Grinding Machine Plans - …

Mirror grinding machine construction log - James Crombie. Mirror grinding machine construction log I started thinking about building my own mirror grinding machine several years ago. Having been on the ATM list now since almost the beginning of it here on the web, I had lots of of inspiration reading of others projects and viewing their webpages

Build Your Own Telescope Part 1: The Mirror – Thomas ...

Rough grinding. This step is about making one side of the glass concave. ... In 1989, my then 13 year old daughter ground a 6″ F6 mirror that tested to better than 1/20 wave in white light. Back then you could not get a pure green light source at any reasonable price. ... – …

Newport Glass Works, Ltd. Grinding, Polishing And …

2014-7-21 · I recommend #60 carborundum for rough grinding. By the way, as in all optical work, be sure that you always maintain bevel on the edge of the mirror throughout grinding. If your mirror is light enough to grind on top, grind much the same way you would a smaller mirror.

Stellafane Links Page

Stellafane External Links provide links to related information on Amateur Telescope Making, Mirror Making, Optics, other Astronomy clubs and local area links to the Springfield, Vermont area.