mirror grinding tool

Mirror grinding - scope making

For hogging out, we start with the "chordal stroke" Put the tool on the bottom, add half a teaspoon of #80 grit, sprinkle with water and place the mirror center near the edge of the tool. Use 1/3 mirror diameter strokes. This means that stroke is 1/3 length in total , 1/6 forward, 1/6th backwards.

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Making a Tile Tool for Mirror Grinding (in 150 seconds ...

15-04-2018  Making a Tile Tool for Mirror Grinding (in 150 seconds!) If playback doesn't begin shortly, try restarting your device. Videos you watch may be added to the TV's watch history and influence TV ...

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tut44 Making A Mirror Grinding Tool - Asterism

Here is how to make the grinding tool. 1. Trace the outline of the blank on a section of 3/4" tiles with a marker. Pick out a flat face tile like the tile shown in the photo. Most sheets of tile have a back webbing to hold them in a sheet. Cut the tile backing material with a utility knife removing the section you want for your grinding tool face.

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Mirror Grinding Machine

The two-axis U-joints you see are made of a soft 2"x2" pine which costs about $1.80 for 8 feet. A 3/8" hole and a 3/8" smooth shank hex head bolt makes for a surprisingly good hinge bearing. The catch basin is a 20" dish used for holding potted plants. About $5.00 at Home Depot.

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Stellafane ATM: Make a Tile Tool

Make sure it is fully waterproofed, and make sure all tiles are flat and firmly attached. Congratulations - you now have a durable Tile Tool to grind your mirror with! The tile tool to the left has been used to grind through 12 micron grit. Note how thin the tiles are at the edge.

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Joy of Mirror Making: Rough Grinding - BBAstroDesigns

31 行  Grinding the curve into the mirror face can be done by one of the following approaches:

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Mirror grinding tile tool - ATM, Optics and DIY Forum ...

08-07-2012  You can hog with the full size tool, but it takes twice as long and is laborious. If you use the ring tool, pour your tile tool after hogging the curve, directly against the mirror. If you wish to do everything with the full size tool, pour it directly against the face of the mirror you wish to grind.

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Mirror Grinding Tool for a 22" f/4.0 Telescope Mirror ...

11-02-2014  Gordon Waite describes the mirror grinding tool that he used to grind a pair of 22" f/4.0 mirrors for the Binoscope project. The tool is made from dental pl...

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SkyBadger - Mirror Grinding Machine

The spherometer is used to measure the mirror curvature as it roughed out, the mirror stand to hold it for testing, the foucault tester to do the focal plane testing, a light source for the foucault tester, tile grinding tools to grind the mirror and more. These are looked at individually. TOP. Spherometer.

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Mirror grinding tile tool - ATM, Optics and DIY Forum ...

08-07-2012  You can hog with the full size tool, but it takes twice as long and is laborious. If you use the ring tool, pour your tile tool after hogging the curve, directly against the mirror. If you wish to do everything with the full size tool, pour it directly against the face of the mirror you wish to grind.

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Mirror Grinding Tool for a 22" f/4.0 Telescope Mirror ...

05-08-2016  Mirror Grinding Tool for a 22" f/4.0 Telescope Mirror. Alia Banda. Follow. 4 years ago 2 views. Mirror Grinding Tool for a 22" f/4.0 Telescope Mirror. Report. Browse more videos. Playing next. 0:06. Download High Performance Grinding and Advanced Cutting Tools (SpringerBriefs in

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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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Making a Dental Stone Tool Method of grinding of a

Making a Dental Stone Tool Method of grinding of a mirror. With this method, the first thing is to mostly grind out a roughly spherical hole in the mirror with a piece of iron (or other metal if desired) that is usually in a ring shape and then you make the Dental Stone tool

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Newport Glass Works, LTD. Grinding, Polishing and

Start grinding by concentrating the center of the mirror on the edge of the tool. Use a long "W" stroke, occasionally stroking the center of the mirror out to 2" to 3" from the edge of the tool, progressing around the circumference of the tool rotating the mirror.

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Fast Mirror Grinding Polishing - The ATMs Workshop

This tool worked fairly well, but progress was slow nonetheless, and I didn't like all the rust stains on everything. As the mirror and tool were slowly pulverized by the grinding process, the iron in the resulting grinding "mud" instantly oxidized.

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Large Thin Mirror Making - BBAstroDesigns

Remember to float the mirror on newspapers, or an old blanket folded up, or outdoor carpet. Rotate the mirror a 1/3 turn every 10 minutes. Use 1/3 'W' strokes if the tool is the same size as the mirror and use 1/2 'W' strokes if the tool is 3/4 size. When the grinding noise becomes quiet, add new grit and continue.

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Making a tin mirror. Grinding without tool. - ATM,

07-06-2018  Instead of a spherometer to test your curve, for simplicity and more appropriate for your purposes (i.e., hand-carving a curve without a tool), you could use the reflection at the radius of curvature to guide you in approaching a spherical shape - there should be no lumpiness when your eyeball is at the radius (keep moving back until your reflected eyeball fills the mirror - there will be a smooth and even darkness (a fully blurred image of your pupil) that floods the mirror.

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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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Mirror Grinding Tool for a 22" f/4.0 Telescope Mirror ...

05-08-2016  Mirror Grinding Tool for a 22" f/4.0 Telescope Mirror. Alia Banda. Follow. 4 years ago 2 views. Mirror Grinding Tool for a 22" f/4.0 Telescope Mirror. Report. Browse more videos. Playing next. 0:06. Download High Performance Grinding and Advanced Cutting Tools (SpringerBriefs in

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Fast Mirror Grinding Polishing - The ATMs Workshop

This tool worked fairly well, but progress was slow nonetheless, and I didn't like all the rust stains on everything. As the mirror and tool were slowly pulverized by the grinding process, the iron in the resulting grinding "mud" instantly oxidized.

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Woodware: Mirror Grinding Stand

The mirror is free to move around on top of the tool. Mirror Grinding Stand (above) The front view and top views show the Mirror Grinding Stand with its wide base (big enough... Mirror Grinding Stand, Plywood Layout, Sketch #2 This sketch is shows the stand parts laid out on a piece of plywood. ...

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Grinding,Polishing and Figuring - Part 2 - Polishing

Your pitch lap requires a base, something to pour the pitch on. It can be flat, or it can have the radius of your mirror on it. The grinding tool is traditionally used by TMs. The base must be thick enough not to flex, and can be made of thick glass, aluminum - even plaster has been successful. What you

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mirror grinding kit grind and polish telescope mirror at ...

All our Mirror Kits contain a Pilkington Float Glass mirror blank and Grinding Tool. These arefinished with fine ground edges. 180 grade first stage ginding powder. 400 grade ginding powder. 303 grade smoothing powder. Top quality Cerium Oxide Polishing powder.

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Making a Mirror. - Astronomy

16-12-2002  Grinding/polishing machines work by rotating the bottom piece (mirror or tool) and letting the top piece freely rotate about it's central axis as it desires to do. As you watch a machine work, the upper piece will rotate at about 1/2 to 1/10 the speed of the bottom piece.

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Making a tin mirror. Grinding without tool. - ATM,

07-06-2018  Instead of a spherometer to test your curve, for simplicity and more appropriate for your purposes (i.e., hand-carving a curve without a tool), you could use the reflection at the radius of curvature to guide you in approaching a spherical shape - there should be no lumpiness when your eyeball is at the radius (keep moving back until your reflected eyeball fills the mirror - there will be a smooth and even

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Telescope Mirror Blanks / TelescopeMirrorBlanks.Com ...

Benefits of using thin plate glass mirror blanks? There are several advantages to using thin plate glass mirror blanks for grinding your telescope mirror: * Thin mirror blanks are less expensive, allowing more people to afford the hobby of grinding their own telescope mirror. * Choosing a thin mirror blank gets you more aperture for your dollar.

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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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