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Mirror Grinding Take A Class Or DIY? Page 2 ATM

Aug 01, 2020· Page 2 of 3 Mirror Grinding Take A Class Or DIY? posted in ATM, Optics and DIY Forum: Thanks Ed. Having taught over 30 years a ATM class and 50 years professional, Read all you can, there are many paths one can follow making mirrors. I like All about Telescopes because its simple and has great drawings of what to expect. It is a hand based

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Stellafane ATM: Fine Grinding

This can be done by grinding with the mirror on top and using the normal stroke. Mirror on top normally is used to increase sagitta, but in this case it should effectively bring down the center to meet up with the lower outer zones and get you to a good contact situation.

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Grinding and Polishing a Meniscus Mirror Astronomy

While tools for grinding telescope mirrors is covered extensively elsewhere, I will say that the challenge posed by a fast mirror is that the sharp curvature requires your grinding surface to be made of small “bits”, whether those bits are tiles, coins, nuts, or whatever. In my case, my mirror support was a styrofoam “donut” used to

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Ed Grinds a Mirror scopereviews

Mirror grinding is a noisy, messy, wet activity. It doesn't take up enough of your attention to fully occupy you, but it does take up just enough that you cannot do something else like watch TV, listen to the radio, etc. You're pretty much stuck there looking at your hands, and adding water or grit once in a while.

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Mirror Grinding Machine ATM, Optics and DIY Forum

Sep 29, 2010· 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 aluminum disk for the turntable

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Mirror grinding scope making

A good starter size is the 150 mm (6") mirror. A 200mm (8") will also work. Most ATM books and websites recommend a Pyrex® mirror blank, but in my opinion, annealed plate glass is better for this first, "learn and practice" mirror.It is cheaper, it is softer and grinds faster, needing less abrasives and with these small sizes, the low expansion glass like Pyrex has no practical

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Mirror-o-Matic mirror making machine ATM pages of

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.

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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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Joy of Mirror Making: Rough Grinding BBAstroDesigns

Rough Grinding The first milestone is putting a curve into the mirror face. The curve's depth dictates the mirror's focal length. The curve should be spherical. Creating the curve can be done by several methods: The curve is ground into the mirror face using a grinding tool. The curve is pre-generated for you.

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Stellafane ATM: Measuring Sagitta

Don't confuse lower case r (mirror radius) with upper case R (Radius of Curvature) which is twice F (Focal Length). Calculating Sagitta. Before you start grinding, you should have decided on your mirror's desired focal length. The two most common beginners' mirrors, the 6" f/8 and 8" f/6, both have 48" focal lengths.

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Chromium Industries, Inc. v. Mirror Polishing & Plating Co

Thomas Nalband is Vice-President of Mirror and Roll Grinding, and is the President of Plasma. In his deposition, he stated that he participated in management decisions at all three corporations. Eugene Nalband, Thomas Nalband's brother, is the President *549 of Mirror and the Treasurer of Roll Grinding and Plasma. The Nalband brothers own stock

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Archtek Grind Guard Bonus With 3" Mirrored Case 2 Each E17

Find many great new & used options and get the best deals for Archtek Grind Guard Bonus With 3" Mirrored Case 2 Each E17 at the best online prices at eBay! Free shipping for many products!

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Internal mirror grinding with a metal/metal–resin bonded

Jan 01, 2001· In contrast, mirror grinding with fine abrasive wheels was achievable when appropriate parameters were chosen. In this investigation, ELID II grinding with a #325 CIB–CBN wheel was used for rough grinding and the MRB–CBN wheels were utilized for finish grinding only. 4.3.2. Mirror surface grinding with ELID III

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Leonardo Da Vinci's mirror making machines

ÝÝÝÝÝÝÝÝÝÝÝ In his Codice Atlantico, Leonardo offers two of sketches of mirror making machines.Ý One machine is designed for grinding concave mirrors of small focal length.Ý The other machine, a much larger piece to implement, grinds mirrors of large focal lengths.Ý Though Leonardo da Vinci creates sketches of mirror grinding, one

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Grinding and Polishing a Meniscus Mirror Astronomy

While tools for grinding telescope mirrors is covered extensively elsewhere, I will say that the challenge posed by a fast mirror is that the sharp curvature requires your grinding surface to be made of small “bits”, whether those bits are tiles, coins, nuts, or whatever. In my case, my mirror support was a styrofoam “donut” used to

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Large Thin Mirror Making BBAstroDesigns

Set aside the tool in case a polishing disaster occurs and you need to come back to fine grinding. Making a polishing tool Make a polishing tool from plaster like we did for fine grinding of at least 1/2 the mirror

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Optical Testing of Parabolic Mirrors : 9 Steps (with

A mirror mount is needed to hold the mirror during testing. If the mirror is a 'thin' mirror (i.e. the thickness is much less than 1/8th its diameter) then the mount must hold the mirror without deforming it. The weight of the glass can deform a thin mirror. In my case, I was making a full-thickness mirror, which is a mirror whose thickness is 1/8th the diameter or more, so mirror deformation

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Mirror sanding YouTube

Jun 15, 2014· Cutting and sanding a mirror edge

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Telescope Mirror Making

For grinding the back of my 12" mirror, I used an 8" disk of 3/4" particle board, glued tiles to the front with epoxy, and coated the back and sides with polyurethane. It worked great. I made my ; polishing tool for my 12" mirror out of three layers of 3/4" particle board glued together. I used a chisel and a belt sander to put a curve on the

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Mirror Finishing a Metal : 7 Steps (with Pictures

Sometimes its really difficult dealing with metals like copper and brass (Two metal that we'll be dealing with) .Mirror finishing a metal like the copper plate I have shown in this Instructable, isn't really hard or difficult to achieve, especially when your projects requires metal parts.A dull non-finished metal part look's tacky than an well finished part.

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Joy of Mirror Making: Polishing BBAstroDesigns

The test here is that there are no areas or zones of the mirror that do not have some polish. If this should ever be the case, polish for another 15 minutes and try again. If still zones show no polish, then consult an expert. It could be that fine grinding did not finish properly or that there is a problem with your polishing technique.

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Mirror-Making Workshop Texas Star Party

Mirror-Making Workshop. This workshop is no longer active, but watch for announcement in future for our next workshop. Let us know you are interested by submitting your request.. This year can be your opportunity to make your own mirror during TSP!

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Grinding,Polishing and Figuring Part 2 Polishing

If this is the case, and several hours of continued polishing produce no appreciable improvement, you must investigate your fine grinding techniques and try again from #400 or 12 micron abrasive. Next, you’ll want to determine approximately how overcorrected the mirror is.

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Amazon : GRINDSHIELD Bruxism Mouth Guard Smaller

The nightguard for teeth grinding provides full protection while ensuring optimal comfort. Shield your teeth and enjoy the most comfortable sleep with GRINDSHIELD. ★ HYGIENIC Includes (4) nightguards that can be kept clean and sanitized by storing them in the sanitizer case.

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