atm mirror grinding machine

Mirror-o-Matic mirror making machine ATM pages of

The M-o-M is a marvellous machine due to its simplicity and yet refined design. It is extremely flexible accommodating mirror sizes from 4 inch up to 20 inch (with slight modifications) and can be used for all three steps necessary in producing a mirror.

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Mirror grinding machine-runout ATM, Optics and DIY Forum

21/02/2015· Page 1 of 2 Mirror grinding machine-runout posted in ATM, Optics and DIY Forum: I am in the process of making a fixed post mirror grinding machine, big enough for a 20 inch mirror. I have now got the motor, pulleys, two shafts and turntable all together and working. The turntable rotates at around 25 rpm,which I think should be OK. If I put a dial indicator on the top of the table near the

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ATM Mirror Grinding Machine Mark II (under Plicht

ATM Mirror Grinding Machine Mark II (under construction) to Part 2 Well, the Mark I with automotive type wiper motors (12V DC) didn't work, so something else was required. Since EBay offers a lot of material that is suitable and available at reasonable prices, I changed for 3-phase 230V 50Hz AC gearmotors, which can be controlled by frequency converters. I know, belt and pulley are doing fine

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Fast Mirror Grinding & Polishing The ATMs Workshop

15/11/2001· The mirror ended up with a very smooth, zone free, nearly spherical figure ready for final figuring. Figure 1: Polishing pads applied to a 9 inch grinding tool. Another local ATM has also tried the polishing pads with abrasive and CeO. His own 17.5" mirror took about nine hours to polish out completely. He experienced some minor zoning with the

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mirror grinding machines. ATM, Optics and DIY Forum

03/10/2006· When I built my machine, I didn't have a computer or any books on building grinding machines so I built one that mimics the stroke a person would do. For instance, my turntable rotates at just one RPM and the stroke eccentric turns at 36 RPM. The eccentric that controls the side to side motion turns at 11 RPM. I can adjust the length of the stroke and the side to side motion as well as the

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ATM Mirror Grinding Machine Mark II (under construction)

ATM Mirror Grinding Machine Mark II (under construction) Part 2. Well, as I described the mirror blank and tool got stuck. One of the centering bolts sure applied some pressure, resulting in this fine (is fine the correct term here?) damage, which is 45 by 23 mm in size (1.8 by 0.9 inch). Sigh. After a total of about 5 hours on the machine the tool wore out. At first I noticed some tendency of

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Mirror Grinding Machine ATM, Optics and DIY Forum

29/09/2010· The eccentric here is 3" in diameter and can work mirrors up to 12.5" in diameter. The new machine will have an 8" eccentric and can do up to 32" mirrors (in case I ever get that ambitious...).

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Automatic Polishing and Grinding Systems ATM Qness GmbH

With the semi-automatic grinding and polishing machines both single and central pressure can be applied. The central pressure allows grinding and polishing of embedded, unembedded and oversized specimens. In combination with a removal measurement, grinding can be done automatically to a defined sample height if required. With single pressure, up to six samples (depending on sample

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Metallographic Grinding & Polishing Machines QATM

Grinding and polishing is the final stage in the sample preparation process and consists of several steps. Each step uses finer abrasive than the previous one, the ultimate goal being to produce a deformation-free, scratch-free and highly reflective sample surface. The sample may need to be examined, either etched or unetched, to reveal the microstructure of the material. It frequently happens

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ATM Mirror Grinding Machine Mark II (under Plicht

ATM Mirror Grinding Machine Mark II (under construction) to Part 2 Well, the Mark I with automotive type wiper motors (12V DC) didn't work, so something else was required. Since EBay offers a lot of material that is suitable and available at reasonable prices, I

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Mirror Grinding Machines an Astronomy Net ATM Forum Message

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. I have found some info on the "Elgin" type,but understand there is also a "Hindle" type. Can anyone help with more info on building these machines? Advantages/Disadvantages,plans etc. keeping in mind that I'am in a wheelchair. Thanks "Squeaky

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ATM Mirror Grinding Machine Mark II (under construction)

ATM Mirror Grinding Machine Mark II (under construction) Part 2. Well, as I described the mirror blank and tool got stuck. One of the centering bolts sure applied some pressure, resulting in this fine (is fine the correct term here?) damage, which is 45 by 23 mm in size (1.8 by 0.9 inch). Sigh. After a total of about 5 hours on the machine the tool wore out. At first I noticed some tendency of

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Making my own fixed post mirror grinding/polishing machine

15/10/2012· 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?

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Mirror grinding machine construction log James Crombie

Mirror grinding machine construction log I started thinking about building my own mirror grinding machine several years ago. Having been on the ATM list now since almost the beginning of it here on the web, I had lots of of inspiration reading of others projects and viewing their webpages I started out with wooden table and some bits cobbled out of our scrap bin at work, I didn't get to far

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Automatic Polishing and Grinding Systems ATM Qness GmbH

Automatic Grinder / Polisher With the semi-automatic grinding and polishing machines both single and central pressure can be applied. The central pressure allows grinding and polishing of embedded, unembedded and oversized specimens.

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Article Index The ATM's Workshop

27/03/2018· Fast Mirror Grinding and Polishing . Many ATMs, by their very nature, are experimenters. This article discusses some of the odd techniques I have used in grinding and polishing mirrors. Some were successful, others were tried and discarded for one reason or another. Most of these may be old hat to you, but you may find something new and useful here. The Dykem Test . The establishment of

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Stellafane ATM: Grits, Polish & Pitch

Mel Bartels, a well respected west coast amateur, recommends on his Large, Thin Mirror Grinding web page starting with something between 30 and 60 grit, and then 120, 220, 500 (=25 micron) and finishing with 9 micron. This is just a 5 grit sequence, as opposed to 8 to 10 for the more traditional sequences usually recommended for novices.

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Metallographic Grinding & Polishing Machines QATM

Grinding and polishing is the final stage in the sample preparation process and consists of several steps. Each step uses finer abrasive than the previous one, the ultimate goal being to produce a deformation-free, scratch-free and highly reflective sample surface. The sample may need to be examined, either etched or unetched, to reveal the microstructure of the material. It frequently happens

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Mel Bartels' Amateur Telescope Making

A telescope mirror is arguably the most accurate surface made by human or machine. Amazingly you can grind a mirror by hand and make a telescope with simple hand tools. With such a telescope, Saturn with its rings are stunning. The purpose of a telescope is to enable our vision quest.

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Automatic Polishing and Grinding Systems ATM Qness GmbH

With the semi-automatic grinding and polishing machines both single and central pressure can be applied. The central pressure allows grinding and polishing of embedded, unembedded and oversized specimens. In combination with a removal measurement, grinding can be done automatically to a defined sample height if required. With single pressure, up to six samples (depending on sample

Get Price

Mirror Grinding Machines an Astronomy Net ATM Forum Message

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. I have found some info on the "Elgin" type,but understand there is also a "Hindle" type. Can anyone help with more info on building these machines? Advantages/Disadvantages,plans etc. keeping in mind that I'am in a wheelchair. Thanks "Squeaky

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Mirror Grinding Machines an Astronomy Net ATM Forum Message

Mirror Grinding Machines an Astronomy Net ATM Forum message. ATM Forum Message. Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem: Home Discussion Forums Amateur Telescope Making Post. Login. Be the first pioneers to continue the Astronomy Discussions

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Article Index The ATM's Workshop

27/03/2018· Fast Mirror Grinding and Polishing . Many ATMs, by their very nature, are experimenters. This article discusses some of the odd techniques I have used in grinding and polishing mirrors. Some were successful, others were tried and discarded for one reason or another. Most of these may be old hat to you, but you may find something new and useful here. The Dykem Test . The establishment of

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Rough Grinding a 20" Quartz Telescope Mirror on the Fixed

07/03/2010· 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 abrasiv...

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Stellafane ATM: Grits, Polish & Pitch

Mirror makers who use grinding machines tend to use fewer grits with bigger jumps in sizes; Starting Grit Size. Mirror Size Starting Grit; 6" and smaller: 80 grit: 8" to 16": 60 grit: 16" and larger: 40 grit : These choice are a compromise between speed and volume of glass to remove and the amount of work needed to smooth out the surface a coarser grit will produce. Typical Grit Sequence. For

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Pre-Grinding Machines for Sample Preparation ATM Qness

The first grinding step for accurate sample preparation is pre-grinding the material to remove irregularieties like embedded edges and to produce the required planar surface. The Belt Grinder Jade 700 is ideally suited for manual deburring and pre-grinding of materials. The Saphir 375 model is an automated stone grinder with touchscreen operation and measurement of the removed layers.

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Astro-Tel Mirror grinding machine

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. Also a Hindle type machine for a southern firm to grind and polish 12.5" mirrors

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James Crombie Jim's Astronomy and ATM Pages

Surf off to various other pages in the ATM world and beyond. I have several pages of things I have built for my astronomical activities to make things a little easier when out with my scopes. I have included CAD Renderings where ever possible as it makes the visualization of the project much easier. I have finished construction of my Mirror Grinding Machine and have started a grinding log My

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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 mirror on a 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. I did not have a lens grinding machine and it is not necessary if you

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Crude Gold Crusher Machine Double Teethed Clay Feldspar Roller Crusher

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