mirror grinding source

US6113464A - Method for mirror surface grinding and ,

An apparatus and a method for mirror surface grinding which enables high quality, stable ELID grinding; and a grinding wheel for electrolytic dressing The apparatus comprises a grinding wheel 3 having a contact surface 2 for contacting a workpiece 1, an electrode 4 facing the surface 2, nozzles 5 for supplying conductive fluid between the grinding wheel 3 and the electrode 4, and a power ,

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Stellafane ATM: Measuring Sagitta

During grinding, the mirror is too rough to measure the focal length optically to any reasonable precision Therefore, we take a mechanical measurement of the Sagitta, or Depth of Curve, and using some simple formulas calculate the focal length , Metal Source, Metal Mart, Online Metals, etc) Pictured is a 1" x 1" x 12" piece of aluminum ,

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Mirror grinding machine construction log - James Crombie

Mirror grinding machine construction log , The blue LED is quite bright , plus I ground and polished the end of the LED to reduce the spread of the light source I now have to finish cleaning the basement of all the wood dust from the project Sept 30, 2003 Finished up an adapter to use my buddies mirror holder for the Foucault tester ,

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Telescope Mirror Making Machine - YouTube

May 09, 2013· A sample --and quite simple-- video of Vitastra's mirror making machine This is a full-custom design first inspired on the polishing machines designed by ,

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Mirror Roller, Mirror Rollers, Supper Finish, Ahmedabad ,

Welcome to Brahmani Grinding & Engineering In year 1995, two young entrepreneurs came together and laid the foundations of a company which today is widely regarded as the leader in providing surface engineering solutions through use of modern technologies in field of surface engineering

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Beveled glass - Wikipedia

Beveled glass is usually made by taking thick glass and creating an angled surface cut around the entire periphery Bevels act as prisms in sunlight creating an interesting color diffraction which both highlights the glass work and provides a spectrum of colors which would ordinarily be absent in clear float glass Beveled glass can be obtained as clusters which are arranged to create a ,

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A high quality surface finish grinding process to produce ,

Aug 23, 2019· x-ray source, and quartz glass was used for the mirror 3 Grinding characteristics of quartz mirror 31 Grinding method, experimental set-up and conditions A precision grinding with electrolytic dressing process [8] was applied to finish mirrors; figure 2 illustrates the experimental grinding set-up, which was developed in our previous ,

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DIY Mirror Grinding and Telescope Making - Google Sites

The light source was a 7 watt white bulb encased in a sheet of scrap aluminum siding and a strip of wood with a small hole in it to let light through Two razor blades, taped very close together over the hole created the slit needed for testing , Supplier of mirror grinding and polishing materials, including Microgrit and Gugolz pitch

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Primary Mirror Grinding Kit - Easy Sourcing on Made-in ,

Dear sir, My name is ankit chouhan I want to purchase the primary mirror grinding kit, that would include 1 Two glass blanks of 8 Inch diameter 2 Various grinding grit size required for grinding I have attached the grit sizes that I found on the internet But I would also like if ,

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King Telescopes, telescope mirror blanks, using both ,

Our intent is to provide a source for lower cost, mirror blanks, and supplies for grinding your own telescope mirror If I had known as a kid how, well not easy, but indeed not as hard as I would have expected to grind my own mirror I sure would have had a much nicer scope then At present we have a supply of high quality Pyrex mirror blanks

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Mirror Surface Grinding of Silicon Wafers with ,

Jan 01, 1990· Mirror Surface Grinding of Silicon Wafers with Electrolytic In-Process Dressing H Ohmori, T Nakagawa (1); Institute of Industrial Science, University of Tokyo Received on January 24,1990 SUMllARY:The authors have studied finish grinding techniquand succeeded in developing a new grinding technique that realises mirror quality surfac

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First time mirror grinding 8" f/5 - Page 3 - ATM, Optics ,

Jan 05, 2020· Page 3 of 6 - First time mirror grinding 8" f/5 - posted in ATM, Optics and DIY Forum: That’s the stroke I’m using TOT with light to moderate pressure Here are blank and tool before and after one turn of 220 without rotating the tool You can see I’m getting more edge than center It’s hard to tell how much the tiles are wearing as they are embedded in the stone rather than epoxied on

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Ritchey Mirror Grinding Machine | National Air and Space ,

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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(PDF) Grinding of aspherical SiC mirrors

The mirror freeform grinding may be parameterized by material behavior, tool size and posture, grinding conditions and abrasive tool performance , beam-line optics and light source for the ,

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Home - Grind Lap Services Inc

After performing flawlessly and being the most consistent supplier in the network, Grind Lap continues to be a reliable source for the low volume service requirements for these same parts I would definitely recommend Grind Lap Services for any of your grinding needs!” –Gary Cook, Sales Manager, Modern Forge Companies, LLC

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China Grinding Mirror, Grinding Mirror Manufacturers ,

China Grinding Mirror manufacturers - Select 2020 high quality Grinding Mirror products in best price from certified Chinese Ceramics manufacturers, China ,

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Precision mirror grinding and machining of steel-bonded ,

The use of ELID mirror grinding technology for precision machining of steel-bonded cemented carbides makes it easy to obtain low-roughness mirrors I The basic principle of ELID grinding technology On-line electrolytic dressing mirror grinding is a new ultra-precision machining technology developed in Japan in the early 1990s

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Dick Parker's Telescope Mirror Workshop: Cassegrain ,

Grinding the secondary is just like grinding any other optic except in minature I ground the secondary with the workstand and worked the tool on top just like I would grind a larger mirror This optic is small enough that a lens grinding machine could work well

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Precision Diamond Machining | SPDT | Precision Mirrors

Single Point Diamond Machining Precision Diamond Machining with Outstanding results on a variety of soft materials Surface Finishes’ single-point diamond fly cutting machines are custom designed to produce accurate and precisely controlled flat surfaces and ,

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Joy of Mirror Making: Fine Grinding - BBAstroDesigns

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 with coarse grit and a tool, slumping in a kiln over a mold, or purchasing the glass pre-generated

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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:

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Build your own telescope part 1: The mirror – Thomas ,

The problem with thin mirrors is that they flex more easily during grinding and polishing, making it hard to achieve the required surface precision They also need a more complex mirror cell (additional support points) Plop is a useful software to let you calculate the number of points needed based on the diameter and thickness of the glass:

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What are the best sources for mirror blanks? - ATM, Optics ,

Jun 12, 2016· What are the best sources for mirror blanks? - posted in ATM, Optics and DIY Forum: Ever since I found Stellafanes mirror making page, Ive been itching to build my own telescope Im going to start with a 6-8in Newt (the classic beginning ATM project!) All I need now are the materials! I can find the yogurt containers pretty easily For the rest of it, I had to do a little searching

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Rough grinding a mirror blank - YouTube

Apr 27, 2011· Pushing glass The initial rough grinding of a 10 inch diameter, f/5 telescope mirror blank See updates on this project at mdpub

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Making a homemade mirror grinding machine - ATM, Optics ,

Mar 06, 2006· The larger one is for grinding and polishing mirrors and is also used at higher speeds to centrifugally cast resin mirrors, an experiment I am playing with in my spare (sic!) time The smaller mirror is used for power wrapping epoxy impregnated fiberglass around mandrels for making tubes and cylindrical components for open truss

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Ritchey Mirror Grinding Machine | National Air and Space ,

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 ,

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Industrial Hand-Held Grinding and Surface Finishing - A ,

Finally, a new fleece should be used to apply the polishing cream and impart the mirror finish; remember to work in only one direction for this final finishing step Grinding and Polishing Pipe Constructions Grinding and finishing open and closed pipe constructions can be a difficult task because there are more “sides” to the project

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Mirror Grinding Machine

My Mirror Grinding Machine For a long time I've wanted to build a machine for grinding telescope mirrors Dennis Rech's M-o-M designs finally inspired me to just get up and do it Over the years, I'd been collecting motors, gear boxes, pulleys, etc

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Dental Stone Tool Initial Grinding

The photo at the left shows a start of a grind and also a grit hottle to the left of the mirror and a bucket with water (dirty from cleaning the mirror) to clean the used grit off of the mirror You will hear a loud grinding sound which is normal At the beginning, you can go ,

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