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atm mirror grinding machine

The MoM 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 That is you can use it to grind polish and figure your optics

Whatever your requirements, you 'll find the perfect service-oriented solution to match your specific needs with our help.We are here for your questions anytime 24/7, welcome your consultation.

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Making a homemade mirror grinding machine  ATM Optics
Making a homemade mirror grinding machine ATM Optics

Mar 06 2006 · The larger one is for grinding and polishing mirrors and is also used at higher speeds to centrifugally cast resin mirrors an experiment I am playing with in my spare sic time The smaller mirror is used for power wrapping epoxy impregnated fiberglass around mandrels for making tubes and cylindrical components for open trusses

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Metallographic Grinding Machines  Polishing Machines
Metallographic Grinding Machines Polishing Machines

ATM GmbH 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 deformationfree scratchfree and highly reflective sample surface

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Mirror grinding machinerunout  ATM Optics and DIY
Mirror grinding machinerunout ATM Optics and DIY

Feb 21 2015 · Page 1 of 2 Mirror grinding machinerunout 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 rpmwhich I think should be OK If I put a dial indicator on the top of the table near the

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Mirror Grinding Machine
Mirror Grinding Machine

My Mirror Grinding Machine For a long time Ive wanted to build a machine for grinding telescope mirrors Dennis Rechs MoM designs finally inspired me to just get up and do it Over the years Id been collecting motors gear boxes pulleys etc

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Mirror grinding machine construction log  James Crombie
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

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telescope mirror grinding machine ATM booksmirror
telescope mirror grinding machine ATM booksmirror

And then a supply of abrasives to get you going Lastly any self respecting mirror maker will have a library of ATM books One of the pictures shows what I am including The last thing I have to say is again this is a fixed post machine The other two axis Boston worm wheel gear boxes on the back of the machine are not hooked up or operational

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Stellafane ATM Materials  Tools
Stellafane ATM Materials Tools

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 is actually a very fine smooth abrasive

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Stellafane ATMMirror Making Myths
Stellafane ATMMirror Making Myths

As we explain in our mirror making demonstrations at the Stellafane Convention the basic mirror making process involves grinding the mirror blank into a sphere with desired radius of curvature for the target focal length We then polish this sphere smooth and then slightly alter it into a parabolic curve

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Stellafane ATM Rough Grinding
Stellafane ATM Rough Grinding

For rough grinding a 6 mirror about 12 teaspoon of grit is used per wet With finer grits proportionately less grit is used per wet Grits in the25 micron range are often premixed with water to form a slurry and water and grit are squirted onto the work together from a plastic squeeze bottle not a

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PreGrinding Machines for Sample Preparation – ATM
PreGrinding Machines for Sample Preparation – ATM

The first grinding step for accurate sample preparation is pregrinding 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 pregrinding of materials

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Stellafane ATM Grits Polish  Pitch
Stellafane ATM Grits Polish Pitch

Mirror makers who use grinding machines tend to use fewer grits with bigger jumps in sizes Starting Grit Size is the polishing compound of choice for most ATMs today It works fast and is easy to use with little mess and is the compound supplied with most commercially available mirror kits polish and pitch necessary for a small

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Stellafane ATM Materials  Tools
Stellafane ATM Materials Tools

Please consult our list of ATM Suppliers for ideas about where to purchase these items Topics on this page Mirror Blanks Grinding Polishing Tools Grits Pitch Storage Containers Grinding Stands and Miscellaneous Items

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tut44 Making A Mirror Grinding Tool
tut44 Making A Mirror Grinding Tool

Unlike most other mirrors in your home the mirror coating of a Newtonian mirror is actually applied to the front face of the glass not the back The light collected by the Newtonian primary mirror does not pass through any glass until it reaches the eyepiece It simply reflects off the curved concave mirror face which focuses all the light

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Stellafane ATM Measuring Sagitta
Stellafane ATM Measuring Sagitta

Measuring Sagitta Depth of Curve During grinding the mirror is too rough to measure the focal length optically to any reasonable precision Therefore we take a mechanical measurement of the Sagitta or Depth of Curve and using some simple formulas calculate the focal length Back to the ATM Index Page Page last revised on Thursday

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Stellafane ATMMirror Making Myths
Stellafane ATMMirror Making Myths

As we explain in our mirror making demonstrations at the Stellafane Convention the basic mirror making process involves grinding the mirror blank into a sphere with desired radius of curvature for the target focal length We then polish this sphere smooth and then slightly alter it into a parabolic curve

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Mirror grinding  scope making
Mirror grinding scope making

Painting the whole tool with epoxy or boat varnish will be just fine On all the ATM webpages and books you will see neat equally sized equally spaced tiles The key to successful mirror grinding is randomness in stroke numbers and tool and disc rotation

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Telescope Making Supplies
Telescope Making Supplies

We provide a complete line of amateur telescope making ATM supplies including Mirror kits Pyrex abrasives pitch and polishing compounds steps are used to produce abrasive grains of like shape and edge for longer and more economical grinding action Please state the mirrors diameter and Radius of Curvature in the comment section

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Newport Glass Works LTD Grinding Polishing and Figuring
Newport Glass Works LTD Grinding Polishing and Figuring

This is why you dont want to make mirrors to be worked on machines too thin For 16 to 18 mirrors 162 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

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Mel Bartels Amateur Telescope Making
Mel Bartels Amateur Telescope Making

Finally the precision refractory molds for slumping the 42 inch mirrors in the kiln are proving too thin Not to despair I have a plan See my updated notes and pictures IC443 the Jellyfish Nebula with my 13 and various filters My new grinding machine polishing a 25 inch 635cm diameter mirror The extended HorseHead Nebula area IC434

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