Both ELID II grinding and ELID III grinding have been successfully performed on a common grinder with an attached internal grinding head. Based on the results obtained in the experiments, some conclusions can be made as follows: 1. Pipe dressing electrodes are superior to electrodes of other shapes in the case of ELID II …

After grinding, polishing and figuring, this 24" F3.5 mirror produced a very nice test result. The larger and the faster the mirror, the tougher it is to get a great surface. FigureXP rated the surface at a bit better than 1/16th wave, P-V on the wavefront.

High-efficiency mirror grinding of single-crystal diamond substrate was investigated. • A rotary grinder with a #15000 diamond wheel was used for mirror …

Making a homemade mirror grinding machine - posted in ATM, Optics and DIY Forum: I want to make a motorized mirror grinder, any good info on this, i have a couple geared motors, low speed high torque. ... Add the motor and the solid state inverter. In my case the cost of the inverter is spread over several 3 phase 220 volt shop tools …

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Mirror grinding is a grinding that the surface roughness of the workpiece is Ra< 0.01μm, and the light is like a mirror after grinding, so it can be clearly photographed. The flatness of the grinding surface …

Home| Capabilities & Services | Materials | Applications | Customer Service Hotline. 8610 CENTRAL AVE, STANTON, CA 90680 TEL. 714-484-7500 * FAX 714-484-7600 * E-MAIL [email protected] Grinding, Polishing and Figuring Thin Telpe Mirrors . Part 2 - Polishing

Page 1 of 3 - 20" F3.8 mirror project - posted in ATM, Optics and DIY Forum: This has been a dream project of mine for many years (in fact for a few decades). After many fault starts over the years, finally I built a mirror grinding machine, found a 20 inch Pyrex mirror blank and started grinding it last week. The mirror blank I got (from a …

In the case of focusing, images appear inverted. Mirrors were employed in a similar fashion. Focusing itself gives newfound qualities to painting and drawing. Most importantly, it can magnify images, thus allowing an artist to construct details otherwise difficult to draw with the naked eye. ... Mirror Grinding Machine ...

There are many different ways of grinding mirrors. The methods I describe are those I use when working at home, grinding and polishing entirely by hand. ... and got a bad case of astigmatism. We ended up pitch blocking a 16" diameter porthole 3/4" thick to the back of it, and then it worked well. While 3/4" would be a reasonable minimum for a ...

Fig. 3 shows the envelope grinding along with tool posture angle θ and envelope trace height h e.On the parallel YZ-sections, the CL and the angle ϕ are driven by the linkage of Y-axis and Z-axis translations and A-axis rotation according to (1), (2), (4), (5).The tool path interval f x is driven by the differential translation of X-axis. The …

In this paper, a novel method is presented to accomplish roughing and finishing processes on one machine, using super abrasive cast–iron–bond CBN …

stedi Hobby Model Polishing Tools 4 PCS, Ultimate Precision Files #10000 Grit Glass Mirror Grinding Tools for Plastic Gundam Models, Wood, Resin-Base Parts. …

Learn what mirror polishing is, its benefits, ways to achieve a mirror finish, cost considerations, and more. ... such as polishing or grinding, to remove all irregularities and micro-scale imperfections. ... Improved Functionality: In some cases, mirror finishes serve a functional purpose. For example, in optical systems, a mirror-like surface ...

In all cases, thoroughly clean the mirror and work area to prevent the coarse grit particles from the carborundum stone from scratching your mirror. Cleaning a Tile Tool with an old toothbrush and plenty of water. ... This can be done by grinding with the mirror on top and using the normal stroke. Mirror on top normally is used to increase ...

Page 1 of 2 - 24 F/6 thin telpe mirror grinding 3/4 plate - posted in ATM, Optics and DIY Forum: A friend and I have decided to grind this as a fun yet challenging project. I have ground and polished several mirrors including a 6, 8.5, 9.2, and 14.7 quartz mirror. I have decided to take the next step with this ultra-thin setup. I know …

Rough grinding. This step is about making one side of the glass concave. It will give your mirror its overall focal ratio. If you make the centre deep, you will end up with a fast telpe (e.g. F/D = 4) well suited for deep sky observations. On the opposite, a shallow mirror (e.g. F/D = 8) will be performing very well on planets and the moon.

How to choose diamond grinding wheel for WC coating? Moresuperhard can provide diamond grinding wheel and diamond sanding belt for thermal spray coating. More Superhard superabrasive products include PCD …

Berthold Hamburger's Tile Tool Page (mirror) Grinding with Washers Grinding Large Thin Mirrors Part I Grinding,Polishing and Figuring Large Thin Mirrors - Part 2 - Polishing Astronomy, telpe making,mirror grinding and testing Large Thin Mirror Making by Mel Bartels Grinding Machines Mirror-o-matic Tom Waineo's Desktop …

Page 1 of 2 - Making my own fixed post mirror grinding/polishing machine - posted in ATM, Optics and DIY Forum: Hey guys. Im thinking of making my own fixed post mirror grinding/polishing and curve generating machine. Ive got loads of questions regarding the design so Ill just start firing away Do I need an eccentric moving tool to be …

In any case, I will use multiple tests to confirm the final figure before calling the mirror complete. Tuesday, September 24, 2002 . I started work this evening by re-channeling and trimming the lap. The center 3" …

What is mirror finish grinding? Mirror grinding is a grinding that the surface roughness of the workpiece is Ra< 0.01μm, and the light is like a mirror after grinding, so it can be clearly photographed. The …

It's a learning process. Making a good performing mirror is not easy and you can't expect to make a good large mirror without some experience. You can find ATM groups many places, maybe there is one near you. If so consider joining the group since hands-on help can be a game changer. This book is considered one if the "bibles" of …

A typical example is a Cranfield Box grinding machine, which was developed to grind hundreds of metre-scale offaxis mirror segments for the European Extremely Large Telpe 4, 5 . The high ...

Mirror grinding and figuring consists of four major steps (plus aluminizing). Rough and Fine grinding use hard tools (glass, tile or metal) and harder then glass abrasive grit …

Making a telpe about 10 years ago was one of the most rewarding projects I've ever undertaken. I ground the mirror and made every other component out of recycled materials as much as possible. This Instructable will cover how to grind a mirror for your telpe - I'll link to other sources for building the other aspects of a telpe.

In this case, since the mirror was oversize (8.25″) and is a "training" mirror anyways, I forged ahead. The first grit I was supplied with was 46 so I dutifully began hogging out my curve using "chord" strokes, …

I've been interested in grinding/polishing my own Newt mirror for a long time but don't know how to get started. As a beginner, would you recommend attending …

CIOMP has completed a ⌀ 3 m monolithic SiC mirror blank, and a ⌀ 4.03 m SiC mirror blank by reaction-formed joint technology. Using a home-built MRF 24 polishing machine (maximum processing ...

Mirror Grinding Machine - posted in ATM, Optics and DIY Forum: I have some interest in building a grinding machine for possible up to an 18 mirror, but something that will also do a 6 or 8 mirror. I have plans for the Mir O Matic but would like to do something a bit more modern. I have some ideas about using a AC drive and a large …