
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.

Mar 07, 2010· This video shows how to setup a mirror grinding machine for fixed-post grinding, also known as spin grinding or spinning. After setup, you'll see how abrasive and water are applied, and how the

Grinding Machine for Large Telescope Mirrors. I designed and built a grinding machine for mirrors up to 42 inches [1.1m] in diameter. By slipping on and off a couple of belts, the machine can quickly be reconfigured for spinning work or for stroking work. The machine can also work smaller mirrors if the drip pan is moved to the fast shaft on

Nov 16, 2018· Types of mirror grinding machines posted in ATM, Optics and DIY Forum: Hi to all, I am planning to make a mirror grinding and polishing machine but i have limited knowledge about these machines. Because of this i have some questions to someone who has some experience with those machines; Some machines have fixed supportes and some of them have a prestaltic moving arm,

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.

Feb 25, 2020· This is a grinding machine for the amateur telescope mirror maker who is interested in a grinding and polishing machine. It is what is called a "fixed post machine". If you are not familiar with it check out "Gordon Waite" on Youtube. He has a number of Youtube videos showing this type of machine in operation.

Sep 29, 2014· Mechanical assembly is complete. The machine could start grinding now. I still need to build the electronics, and then there's painting and finishing. telescope mirror grinding polishing

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 Newtonian telescope is its primary mirror. Most Newtonian primary mirrors have either a spherical or a


Stellafane, Home of the Springfield Telescope Makers Inc., Springfield, Vermont, USA, Amatuer Telescope Making. Amateur Telescope Making Main Page. mirror grinding techniques are very similar to those written up by Porter and Ingalls in the 20´s and 30´s. Many amateur astronomers still choose to fabricate their own instruments, for the

How I built an edge grinder for telescope mirror blanks. 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. [Mike's telescope workshop] [Mike's home-built

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

Want to build your own telescope? Start with one of our telescope mirror kits. Each kit comes with a telescope mirror blank and all the abrasives (silicon carbide grits and white aluminum oxide powders), cerium oxide polish and pitch to grind and polish it to your specifications.

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.

Nov 16, 2018· Types of mirror grinding machines posted in ATM, Optics and DIY Forum: Hi to all, I am planning to make a mirror grinding and polishing machine but i have limited knowledge about these machines. Because of this i have some questions to someone who has some experience with those machines; Some machines have fixed supportes and some of them have a prestaltic moving arm,

Stellafane, Home of the Springfield Telescope Makers Inc., Springfield, Vermont, USA, Amatuer Telescope Making Measuring Sagitta (Depth of Curve) During grinding, the mirror is too rough to measure the focal length optically to any reasonable precision.

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 Newtonian telescope is its primary mirror. Most Newtonian primary mirrors have either a spherical or a

Oct 15, 2012· 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 able to polish a mirror spherical? Would

This is a grinding machine for the amateur telescope mirror maker who is interested in a grinding and polishing machine. It is what is called a "fixed post machine". If you are not familiar with it check out "Gordon Waite" on Youtube. He has a number of Youtube videos showing this type of machine

This is why you don't want to make mirrors to be worked on machines too thin. For 16" to 18" mirrors, 1.62" thick is the thinness I would recommend. There are several ways to support the mirror on a grinding and polishing machine turntable, but first make sure the turntable itself is rigid. It

Build your own telescope part 1: The mirror. by Thomas posted in: Astronomy, DIY 6 tend to have a higher surface quality than the mirrors polished by industrial machines. Building a reflector telescope can be decomposed in 2 steps: make the mirror and build the tube/mount. to chemical grinding (cerium oxide). The strokes stay the

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.

Fixed-post machine grinding is where the mirror is on a turntable rotating around 20 PRM [speeds vary], and a 75% tool is on top. They are already curve-generated. The tool is hanging over the mirror by 1/6 the diameter of the tool, or about 1/8 diameter of the mirror, and is fixed in this position.

This is why you don't want to make mirrors to be worked on machines too thin. For 16" to 18" mirrors, 1.62" thick is the thinness I would recommend. There are several ways to support the mirror on a grinding and polishing machine turntable, but first make sure the turntable itself is rigid. It

Build your own telescope part 1: The mirror. by Thomas posted in: Astronomy, DIY 6 tend to have a higher surface quality than the mirrors polished by industrial machines. Building a reflector telescope can be decomposed in 2 steps: make the mirror and build the tube/mount. to chemical grinding (cerium oxide). The strokes stay the

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.

Fixed-post machine grinding is where the mirror is on a turntable rotating around 20 PRM [speeds vary], and a 75% tool is on top. They are already curve-generated. The tool is hanging over the mirror by 1/6 the diameter of the tool, or about 1/8 diameter of the mirror, and is fixed in this position.

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. For the

Please see the Buy Telescope Mirror Blanks page for low prices on plate glass mirror blanks. If you'd like to buy a complete mirror grinding KIT, with all abrasives and grinding tool included, please see the Buy Telescope Mirror Kits. website for the lowest prices on plate glass telescope mirror grinding kits.

Stone tools go back 3.3 million years. Pounding, scraping, knapping, grinding combined with fire, heat, melting leads us today to grinding telescope mirrors from glass. Making a telescope mirror is one of the most satisfying and sublime joys you will experience. It's also arguably the most accurate surface made by man or machine.

Now that I have several blanks made, it is time to grind and polish one into a telescope mirror and test it out. I can use one blank as the mirror and another as the grinding tool, and have a couple in reserve in case something goes horribly wrong during the grinding and polishing operations. I'll post an update once a mirror is completed.

Centerless Grinding; Rotary Grinding TELESCOPE MIRROR BLANKS MADE TO YOUR SPECIFICATIONS. If one of our standard telescope mirror blanks isn’t exactly what you’re looking for, Advanced Glass can custom make a telescope mirror blank to your specifications. AGI can diamond machine ID holes into your mirror blank ; AGI can produce

As often in sciences and technology, Leonardo da Vinci was a pioneer, creating machines for the production of optical devices. Indeed, between 1513 and 1517, he imagined machines to grind and polish telescope mirrors, which, at the time, were made of bronze.

Mirror Blanks For Telescopes . United Lens Company supports both the professional and amateur astronomical community. We’ve sold classic test plate and mirror blanks for nearly as long as ULC has been in business. Additionally, we provide high-end custom solutions including the application of durable thin film mirror and anti-reflective coatings.

There are many reasons for grinding your own mirror. Either you want a unusual size, or focal length, or to satisfy your curiosity, or to have the "pride of achievement" by fabricating something as precise as a telescope mirror.

Nov 01, 2011· Hi AllWeve been having some idle discussions about grinding mirrors here. In particular, weve been discussing building a fixed post mirror grinding turntable for cutting mirrors up to about a 24inch diameter to spherical. Its only a pipe dream at the

Mar 16, 2015· Page 1 of 5 Making a Mirror grinding & Polishing machine posted in ATM, Optics and DIY Forum: Hello, I am on the half of the way to make a mirror grinding machine inspired by original M-O-M design. I made the pulley arrangement such a way that, both the turn table & eccentric spins at 50 RPM fixed.
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