mirror grinding tool

GRINDING A TELESCOPE REFLECTOR WITH TOOL …

the tool to hit the mirror blank a little over the center. By rotating the table and the tool in opposite directions, a hollow is ground into the blank, while at the same time the tool gradually loses its square edge and the grinding surface takes a convex form. When the depth in the mirror blank is

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Mirror grinding

2007-2-13 · Again, rotate randomly, both tool and mirror. As soon as the curve has reached the edge, and your saggita is equal or slightly deeper (depending on method you use later) you can go on with the fine grinding. There are 2 ways to proceed.

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Woodware: Mirror Grinding Stand

2020-5-21 · 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

2015-4-5 · The tool is always smaller than the mirror if a concave mirror is desired. Tools of 50% to 80% of the mirror’s diameter are normal. Tools of less than 50% diameter may cause problems while grinding, although they are valuable when figuring a parabola with a pitch lap.

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mirror grinding tool

Mirror Grinding Tool for a 22" f/4.0 Telescope . 5/8/2016· Mirror Grinding Tool for a 22" f/4.0 Telescope Mirror. Report. Browse more videos. Playing next. 0:57. Grinding a 12.5-inch telescope mirror with 120 grit. learn more; Mirror Grinding Machine Ahmedabad. Mirror Grinding Tool- SOF Mining machine. Lens Mirror Making Best Lenses And ...

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

 · 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 pla...

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22" mirror grinding

2016-7-3 · The mirror rested on a piece of carpet and a thick, flat board on a solid table. All the grinding (and polishing) was done tool on top (TOT). I used Carbo grades 180 and 320, Microgrit 15µ, 9µ, 5µ and 3µ (recommendation of Stathis). The tool was matched to the blank with Carbo 180.

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Joy of Mirror Making: Rough Grinding

2020-5-19 · Grinding the curve into the mirror face can be done by one of the following approaches: Ceramic tiled tool ground against the mirror face. Glass tool ground against the mirror face. Ring tool. Motorized grinding wheel on the end of along boom that is anchored that is moved back and forth across the mirror …

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Newport Glass Works, LTD. Grinding, Polishing and …

2014-7-21 · You can use a tool 75% of the mirror diameter without much difficulty. Tools smaller than 75% have less tendency to produce a spherical curve during fine grinding. Although a 16" tool works well with a 16" mirror, for larger mirrors I would recommend a smaller tool simply because full size tools are heavy and awkward.

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Making A Tile Tool

The tool's total volume will be equal to the volume of the cylindrical part v = PI*(r^2)*t plus the volume of the hogged sagitta on the mirror v = PI*(r^4)/(8*f) where v are the volumes of the two portions of the shape, r is the radius of the tool, t is the edge thickness of the tool, and f is the focal length of the mirror.

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