• Telescope Making Links

    Grinding Glass An ATM's Grinding Barrel Top Grinding Your Telescope Mirror Polishing Your Telescope Mirror Glass Notes Grit and Microgrit Grading Conversion Chart at READE Making a tile on plaster tool Berthold Hamburger's Tile Tool Page (mirror) Grinding with Washers Grinding Large Thin Mirrors Part I Grinding,Polishing and Figuring Large Thin Mirrors Part 2 Polishing Astronomy, .

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  • Mirror grinding

    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 (visible at the eyepiece) advantage. You might purchase a mirror grinding kit, and have ...

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  • Amateur Telescope Makers (ATM) Archive for NOV06

    [ATM] 20incher with segmented and ribbed mirror at 12Kg, Andreas Derwahl. Re: [ATM] 20incher with segmented and ribbed mirror at 12Kg, Ric Rokosz. Re: [ATM] 20incher with segmented and ribbed mirror at 12Kg, Andreas Derwahl. Re: [ATM] 20incher with segmented and ribbed mirror at 12Kg, John Sherman; Re: [ATM] 20incher with segmented and ribbed mirror at 12Kg, Mel Bartels

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  • Mirror Grinding Machines

    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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  • Polisher / Grinder for Sample Preparation – ATM Qness

    Grinding Polishing Machine Qpol 300 M2. Working wheels: Ø 250/300 mm. Speed: 30600 rpm, continuously adjustable. Twin wheel unit (seperately controlled) Visualization of the current grinding force. Timer function. Automatic water valve. Product details. NEW.

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  • Mirror Grinding Machine | Hackaday

     · PS I have a mirroromatic grinding machine, they can be just as random as a human and don't need to give a patterened surface. Its all in the tools and who uses them. Report comment. Reply ...

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  • Article Index

     · 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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  • Re: Mirror Grinding Machines

    "Squeaky Wheels" There was an article in Sky and Telescope recently about grinding machines. I built one and think that it is the 's meow for doing glass work. You will notice that like almost everything in optics, something always works if you understand what it is doing and make so that it does the function rather than slavishly following the form of the work. Have Fun and Enjoy making ...

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  • Re: ATM Mirroromatic. glass and aluminum tools

     · If you can machine with a tolerance of ",the tool and mirror will match perfectly. Most people cannot so the curves will only match within an inch or so of equal ROCs. Don't bother ruining a metal pregenerated tool by trying to hog a flat mirror blank. Only use them on matching curved blanks. When it comes to a good all around do everything tool, I still think that you can't beat a ...

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  • Mirror Grinding Machine

    My Mirror Grinding Machine. For a long time I've wanted to build a machine for grinding telescope mirrors. ... I have a few things that aren't relevent to the topic at hand but an ATM might find interesting. * Print a Couder mask with CouderPrn * Print a Ronchi screen with PrintaRonchi : Following line added 12/25/12. Try Parab, a new mirror analyzer for Windows inspired by Sixtests and ...

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  • Grinding Polishing Machine Qpol 300 M2

    The Qpol 300 M2 is a manual, twin wheel grinding and polishing machine for separately controlled working wheels Ø 250/300 mm. In the ergonomically integrated touch panel, all process parameters as well as convenient features for manual preparation are clearly displayed and can be easily changed at any process parameters can be saved as a preparation method.

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  • Mirror Grinding Machine

    Atm mirror grinding mom is a marvellousmachinedue to its simplicity and yet refined is extremely flexible accommodatingmirrorsizes from 4 inch up to 20 inch with slight modifiions and can be used for all three steps necessary in producing amirror. Chat Online . Roll Grinding Machine Cylindrical Grinding Mirror. Our grinding capacity 1850mm x 6500mm length .

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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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  • First version of the grinding machine

    ATM Martin Cibulski ; Start > Grinding Machine with Sliding Turntable: For grinding my first 6" mirror I built a simple grinding machine. It has a 'sliding turntable' which is mounted on a platform which is moved back and forth by a gear motor. The turntable is driven by a linear piece of drive belt mounted on a wooden plate at the backside of the machine. The plate has two ...

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  • mirror grinding telescopemirror grinding tool

    MirroroMatic mirror making machine ATM pages of ... Nov 06, 2013· Page 1 of 2 24 F/6 thin telescope mirror grinding 3/4 plate posted in ATM, Optics and DIY Forum: A friend and I have decided to grind this as a fun yet challenging project. I have ground and polished several mirrors including a 6,,, and quartz mirror. I have decided to take the next step with this ultra ...

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  • ATM Grinding machines or Polishing machines

    ATM Grinding machines or Polishing machines. To: atm; Subject: ATM Grinding machines or Polishing machines; From: Scott Rychnovsky Date: Mon, 16 Feb 1998 21:41:34 0800; ReplyTo: Scott Rychnovsky Sender: owneratm; I have a question for all you machine grinders and polishers. I finished a scaled up Wainoe/Elgin grinding machine .

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  • Stellafane ATM: Pour a Pitch Lap

    Traditionally, the lap is poured on the tool used to grind the mirror. But this means the that tool is no longer available should you need to return to fine grinding due to a scratch or other problem. Since plaster disks are so simple and inexpensive to make, most people today pour their lap on a separate disk. Close up of the business end of a Pitch Lap. Diagonal facets are being cut into the ...

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  • Atm Mirror Grinding Machine

    Mirror Grinding Machines an Astronomy Net ATM Forum message ATM Forum Message Forums 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 truck mirror grinding machine products are offered for .

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  • SkyBadger

    The mirror machine came to me as a result of astronomical horsetrading, 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 mirroromatic design of Dennis Rech ( link ). While the bulk of the components were in ...

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  • Re: ATM mirror grinding mechanics marshmello test

    Subject: Re: ATM mirror grinding mechanics marshmello test; From: Steve Bell Date: Thu, 07 Aug 1997 10:57:11 0700; References: <> ReplyTo: Steve Bell Sender: owneratm; Jim Varney wrote: > > > I would respectfully disagree here. Friction is a weak molecular attraction > between two objects; it's the force that keeps ...

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  • Stellafane ATM:Mirror Making Myths

    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 the mirror becomes concave (a shallow "bowl").

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