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mirror grinding building

Mirror grinding - scope making

A good starter size is the 150 mm (6") mirror. A 200mm (8") will also work. 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

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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. 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. Most of them

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tut44 Making A Mirror Grinding Tool - Asterism

Making A Mirror Grinding Tool By Allen Malsburry The average person would never think, “I can make my own ... For many decades now, amateur astronomers have been building their own telescopes. In the good old days, building your own telescope was the only way to get an affordable large aperture telescope. Back in the day, owning your own 10 ...

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Joy of Mirror Making: Rough Grinding - BBAstroDesigns

31 行  I use an old printer stand. Here is a 25 inch [635cm] mirror being rough ground followed by a

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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

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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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Woodware: Mirror Grinding Stand

Mirror Grinding Stand (above) The front view and top views show the Mirror Grinding Stand with its wide base (big enough to walk around on), pedestal, and small top. The top is only a little bigger than the largest mirror you wish to grind. The mirror tool is held to the table with three screwed down blocks and six small wedges.

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telescope mirror grinding / polishing machine with ...

Feb 15, 2016  The machine is shown grinding a 300 mm mirror.How to build a tachometer: florin.myip/blog/making-tachometer-grinding-polishing-machine-telescope-m...

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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. There are lots of good ideas there. The large wood circle will become the base of the turntable.

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tut44 Making A Mirror Grinding Tool - Asterism

Making A Mirror Grinding Tool By Allen Malsburry The average person would never think, “I can make my own ... For many decades now, amateur astronomers have been building their own telescopes. In the good old days, building your own telescope was the only way to get an affordable large aperture telescope. Back in the day, owning your own 10 ...

More

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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Building a fixed post mirror grinding machine ...

Aug 19, 2019  Re: Building a fixed post mirror grinding machine Post by Kanadalainen » Fri Aug 16, 2019 5:17 pm Update: The 6061 aluminum turntable top was ready this

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Woodware: Mirror Grinding Stand

Mirror Grinding Stand (above) The front view and top views show the Mirror Grinding Stand with its wide base (big enough to walk around on), pedestal, and small top. The top is only a little bigger than the largest mirror you wish to grind. The mirror tool is held to the table with three screwed down blocks and six small wedges.

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Mirror-o-Matic mirror making machine - ATM pages of ...

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.

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Large Thin Mirror Making - BBAstroDesigns

Make a grinding tool from finishing plaster, hydraulic cement, casting plaster, or concrete, available at well equipped building supply houses. Cover the face of the mirror with plastic wrap. Build a dam on the mirror's face from cardboard 1 1/2" to 2" high.

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Preparing to Grind a 22" f/4.0 Telescope Mirror - YouTube

Feb 10, 2014  This video shows preparations for grinding a 22" f/4.0 telescope mirror. This is the first mirror of a pair that will become a 22" binocular scope! Gordon ...

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Telescope Making Supplies

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

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Telescope Mirror Blanks / TelescopeMirrorBlanks.Com ...

* Thin plate glass mirror blanks are lighter than standard mirror blanks, which allows you more flexibility in designing your telescope tube assembly and mount. * When grinding a telescope mirror, you will find that plate glass takes less time to grind and polish than a mirror made from borosilicate glass. Please see the Buy Telescope Mirror Blanks

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Optical Testing of Parabolic Mirrors : 9 Steps (with ...

A mirror mount is needed to hold the mirror during testing. If the mirror is a 'thin' mirror (i.e. the thickness is much less than 1/8th its diameter) then the mount must hold the mirror without deforming it. The weight of the glass can deform a thin mirror. In my case, I was making a full-thickness mirror, which is a mirror whose thickness is 1/8th the diameter or more, so mirror deformation ...

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Mirror Grinding Machine Hackaday

Sep 26, 2006  The true test of the amateur astronomer is building their own telescope. Grinding and polishing your own mirrors is a long, arduous process. Instead of

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grinding / polishing machine for telescope mirrors ...

Mechanical assembly is complete. The machine could start grinding now. I still need to build the electronics, and then there's painting and finishing.

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World Wide Mirror Class List - Stellafane

DC: NCA Telescope Making and Mirror Grinding Classes. Twice Weekly on Tuesday Friday 6:30-9:30 PM in Washington, DC at the Chevy Chase Community Center. Contact: (202) 262-4274. DE: Mid-Atlantic Mirror Making Seminars. Delmarva Stargazers hold an annual long weekend of mirror making in March in Delaware.

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Telescope Making Links - Supplies and Components STAR ...

Telescope Making Links - Supplies and Components. Where to buy the ATM stuff you will need. Wood. Apply Ply Plywood - Local distributor is Northern Jersey Reserve Supply, 2 Midland Ave., Elmwood Park, NJ 07407 Tel (201)796-3000. Birch and Maple Plywood. Columbia Forest Products - Europly and JayCore Plywood - Local Distributor is North Pacific ...

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Building a fixed post mirror grinding machine - Page 2 ...

Oct 13, 2019  Things I need to probably change or fix: My gearing of the DC motor. I will need a slow speed for polishing (5 rpm), and faster speeds for hogging out and fine grinding (15- 30 rpm), so likely need to think about adding a gear reduction. Fixing the aluminum turntable to the wooden turntable base. Building wedges to locate the mirror on the ...

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

Placing the mirror face up and grinding with a moderate "W" stroke will also move the curve toward the edge, and tends to produce a more spherical surface. Leaving the mirror grossly hyperbolic will make fine grinding difficult. Fine Grinding . We've all heard stories about fine grinding taking hundreds of

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Diy mirror grinding aspherical : telescopes

OP is specifically asking about grinding/polishing/figuring the segments of a segmented mirror, which is a far more complex process than a normal parabolic mirror that ATMs make, for both figuring the mirrors themselves, as well as the engineering challenges of positioning the mirror segments.

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Fixed post mirror grinder advice - DIY Astronomer ...

Nov 01, 2011  Hi AllWe've been having some idle discussions about grinding mirrors here. In particular, we've 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 moment, but has anyone had experience buildi...

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Grind and Polish a Dobsonian/Newtonian Telescope Mirror ...

Making a telescope about 10 years ago was one of the most rewarding projects I've ever undertaken. I ground the mirror and made every other component out of recycled materials as much as possible. This Instructable will cover how to grind a mirror for your telescope - I'll link to other sources for building the other aspects of a telescope.

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Telescope making

Mirror grinding techniques 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. 300 mm Dobsonian This is my main telescope.

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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.

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How to Build a Telescope

For mirrors 12.5 cm diameter and less (which are not recommended), of long focal ratio, t he centre deepens rather rapidly. for such mirrors, it is preferable during off �centre grinding to keep the off-set only about 1/8D from the centre and to start checking the grinding with reduced stroke as soon as ¾ of the required sagitta ahs been ...

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Buy mirror blanks for telescope making

10 Inch Mirror Blanks, 3/4" Thick: $55 + SH (16);Shipping prices are to the USA - not shipping outside the US, sorryCombined shipping is possible - Write. For a complete mirror making KIT, with all abrasives, polishing compounds, pitch, and grinding tool included, please see our Buy Telescope Mirror Kits website for great prices on plate glass ...

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ATM (Amateur Telescope Making) Links

The Amateur Telescope Making Webring - About 100 ATM link sites. Links2go - Lots of Amateur Telescope Making Links. Collection of links when building your own Observatory. Sites uncluding Mirror Grinding. John's Amateur Telescope Making Page - Lots of useful ATM info, particularly on mirror making and testing.

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P1100637 Telescope Building

Lower Tube Section – Mirror Box; Connecting the Parts; Spiders and Cells; Mount; The Riccioli – JTK2 (2012-13) Inspiration. Historical Excursus 1: Aristotelian Physics; Historical Excursus 2: Riccioli; Building It. The Mirror: Grinding, Polishing, Figuring; Conceiving a Tube. Thinking in Eights; Building the Octagonal Tube; Hiding Flaws ...

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From Ring Tool to Tile Tool Telescope Building

(4) we removed the tile tool from the mold and ground the topside (non-tiled side) by sliding it (topside down) on the sidewalk outside the community center. The result is a grinding tool of the same diameter as the mirror: the tiled side has the same curve as the mirror, and the topside is

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Telescope Making Links - Designs and Techniques STAR ...

The Kutter Schiefspiegler. Yolo Telescopes. 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.

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Building a grinding stand...dimensions? - ATM, Optics and ...

Nov 07, 2013  Building a grinding stand...dimensions? - posted in ATM, Optics and DIY Forum: Hi all. Title pretty much tells the tale. Considering building a grinding stand 2 by 4s glued and screwed with plywood sides. Want to use under the top as a storage area for misc stuff. Anyways been a few decades since any mirror work. Main question is how tall?

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