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build a mirror grinding machine

building a fixed post mirror grinding machine ...

building a fixed post mirror grinding machine ...

In addition, a great deal of money will be saved: a finished 24 scope will set you back $7,000; grinding your own mirror and building the mount yourself will cost you $2,000. Amateurs have made mirrors up to 41 by hand. A grinding machine relieves the labor, but is not necessary. A 24 is the largest you can comfortably do solo. Large Thin Mirror Making by Mel Bartels. Grinding Machines. Mirror-o-matic. Tom Waineo's Desktop Grinding/Polishing Machine. Ken Lilja's Grinding Machine. Grinding Machine. Figuring. Figuring a Paraboidal mirror by thermal predistortion. Optical Testing.

mirror grinding machine construction log - james crombie

mirror grinding machine construction log - james crombie

Mirror-o-Matic was designed to be a very low cost astronomical mirror grinding, polishing and figuring machine. Its attributes are: 1. It can be built for somewhere between $200 and $400. 2. It is constructed of hardware store items and it needs no machined parts. 3. It is constructed primarily of 3/4 inch plywood and has few close tolerances. 4. Grits Pitch. Grits and Polishing Compound are the consumables in the mirror making process. Grits, typically of Silicon Carbide or Aluminum Oxide, in various grades, are used as an abrasive between the mirror and tool to grind the glass. Pitch is used to make a soft, conforming pitch lap for polishing and figuring. It is used with a Polishing Compound such as Cerium Oxide, which …

astro-tel - mirror grinding machine

astro-tel - mirror grinding machine

Dec 13, 2021 Roughness in stroke numbers, tool rotation, and disc rotation are all important factors in good mirror grinding. Making a tile tool out of tiles that have been broken with a hammer can help to increase the unpredictability of the game:) Always work with water on your hands! Prior to beginning to grind, sprinkle some water on the grit. Sep 26, 2006 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.

skybadger - mirror grinding machine

skybadger - mirror grinding machine

Aug 19, 2019 Re: Building a fixed post mirror grinding machine. I I had a nice piece of 3/4 stainless dowel that was begging to be used. So I bought a cheap pillow block to provide the locator for the metal dowel, and then drilled the overarm to fit. These pillow blocks are $8 and come complete with a locking collar - great deal. Mar 06, 2006 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. One more question ...will 1 1/2 shaft size pillow block bearings work good for a homemade EQ mount? Thank you , John

building a fixed post mirror grinding machine - page 2 ...

building a fixed post mirror grinding machine - page 2 ...

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. Jun 06, 2010 I started this thread to record my building progress of a new mirror grinding and polishing machine. This machine will be capable of handling mirror sizes up to 22. I have decided that 22 is the absolute maximum otherwise becomes too cumbersome to move around. I have won 2 x 1/3 horse power single phase electric motors on eBay, at $45 each.

telescope mirror grinding machine crusher mills cone ...

telescope mirror grinding machine crusher mills cone ...

Nov 01, 2011 Basically there are two types of grinding/polishing machine. The ‘traditional’ type which involves the mirror rotating at a relatively slow speed, a few rpm for a big mirror (16-20 inches) with the tool moving across the mirror, from side to side, at a higher rpm depending on the size of the mirror and/or tool. I borrowed a few ideas from the Mirror-O-Matic mirror grinding machine, particularly how to mount the turntable on top of the pulley. Anyone building machinery for cold-working glass should have a look at the MOM web site and plans. There are lots of good ideas there. The large wood circle will become the base of the turntable.

mirror grinding machine products suppliers ...

mirror grinding machine products suppliers ...

suited to building a mirror grinder with. The machine contained a large speed reducer (47-1 ratio), a variable speed mechanism, motor mount and tachometer. the frame was too small to be able to fit the over-arm drive in so I left it. I started out copying all of the existing parts into my CAD program. I then sort of filled in the blanks. Cad ... Making A Mirror Grinding Tool By Allen Malsburry The average person would never think, “I can make my own telescope.” Most amateur astronomers believe, “I can buy a better telescope than I can build.” Neither is actually correct. For many decades now, amateur astronomers have been building their own telescopes.

mirror grinding machine - the home shop machinist ...

mirror grinding machine - the home shop machinist ...

MIRROR GRINDING MACHINE. I made my first mirror grinding and polishing machine over thirty years ago. It used the working principle of the machine illustrated at A Fig.3, Page 163, Amateur Telescope Making Book 1. A bowl which rotated was fitted to the spindle. I also built another machine of the same type. The mirror machine came to me as a result of astronomical horse-trading, swapping a large GEM mount and a 8 Newtonian OTA for the machine as it was and a start kit consisting of two 6 blanks and the grit, rouge and pitch to manufacture a mirror. The grinding machine had been built to the design of the mirror-o-matic design of Dennis Rech ...

mirror grinding machine hackaday

mirror grinding machine hackaday

I built another mirror grinding machine (out of welded angle iron) to work on the mirror, but never used it. In mid-2008 the desire to finish the 12.5 inch mirror hit again - this time with a vengeance. I had this urge to not only finish that mirror, … Oct 17, 2009 I decided to try my hand at grinding an polishing my own mirror. Before I took the plunge of buying glass I wanted to see if I could build the required devices needed to grind, polish, and test a mirror. Build a Ronchi / foucault tester. Build a machine to grind the mirror (AKA mirror-o-matic) Buy some glass. Mirror-O-Matic

making a homemade mirror grinding machine - atm optics ...

making a homemade mirror grinding machine - atm optics ...

Howdy, I am going to be joining the ranks of retired people on 12/31,and I am thinking about grinding another mirror. My first mirror is an 8/f5 that was done by hand. Since then I had to have surgery on my right shoulder,so I am wanting to build a grinding machine. To control the shape of your mirror, you will have to use or build your own tools. A tool commonly used is the Foucault tester also known as knife-edge test. It is easy to build from materials available at the hardware store. A Ronchi screen is also a time saver tool. More complex tools such as interferometers give a more precise reading but ...

24 mirror grinding and polishing machine - iceinspace

24 mirror grinding and polishing machine - iceinspace

Here is a blank with the rough edge ground down and trued up. It only takes a few minutes on the grinding machine I built for the job. Here is the super simple grinding machine I built to true up the edges of the blanks. It is just an angle grinder with … With the Mirror on top, the tool on the bottom, and coarse grit in between, we start grinding with the mirror overhanging the tool. We rub the center of mirror against the edge of the tool, and this wears a depression in the center of the mirror (the edge of the tool wears down also, so that the tool becomes convex (a hill in the center) and ...

tut44 making a mirror grinding tool -

tut44 making a mirror grinding tool -

Grinding a Mirror For it is true that astronomy, from a popular standpoint, is handicapped by the inability of the average workman to own an expensive astronomical telescope. It is also true that if an amateur starts out to build a telescope just for fun he will find, before his labors are over, that he has become seriously interested in the ... Here's the mirror ready for polishing, fine ground to 20 micron aluminum oxide. That's quite the deep curve! Problem #4: build a polishing machine. Now it was time to design and build a polishing machine to polish the glass with polishing pads placed on the grinding tool. More information, specifications, images and video available here...

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