joy of mirror making rough grinding

Stellafane ATM: Rough Grinding

For rough grinding a 6" mirror, about 1/2 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 spray bottle).

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Joy of Mirror Making: Fine Grinding BBAstroDesigns. The goals of fine grinding are to prepare the curved mirror face so that it is ready for polishing and figuring and make any adjustments of the focal length.

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Joy of Mirror Making: Rough Grinding Mel Bartels. Rough grinding a telescope mirror. Mel Bartels. Rough Grinding. The first milestone is putting a curve into the mirror …

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joy of mirror making rough grinding educationcare Joy of Mirror Making: Fine Grinding Mel Bartels and BBAstroDesigns. Previously in rough grinding we deepened the center of the mirror's face either by I recommend making a separate fine grinding tool from plaster and tiles.

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Joy of Mirror Making: Rough Grinding Mel Bartels A tiled plaster tool grinds both tiles and plaster, with both starting flat, meaning that the tile must be ground convex and the glass ground concave. Ring tools reach desired depth about twice as fast as tiled ceramic tools.

Joy of Mirror Making: Rough Grinding bbastrodesigns

31 · Rough Grinding The first milestone is putting a curve into the mirror face. The curve's depth dictates the mirror's focal length. The curve should be spherical. Creating the curve can be done by several methods: The curve is ground into the mirror face using a grinding tool. The curve is pre-generated for you.

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Joy of Mirror Making: Rough Grinding BBAstroDesigns. 31 rows· Rough grinding a telescope mirror. The Joy of Mirror Making Mel Bartels Creating the curve can be done by several methods: The curve is ground into the mirror face using a grinding tool. The curve is pregenerated for you. The curve is created by slumping the blank in a kiln over a mold.

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Mirror blank kit ATM, Optics and DIY Forum Cloudy Nights. 20140623 · I purchased my 8" mirror making kit from Newport Glass and it included a Pyrex blank, a plate glass tool, all the grits needed from silicon carbide #80 grit for rough grinding through cerium oxide for polishing and figuring.

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tut44 Making A Mirror Grinding Tool Amateur Astronomers, Inc. Newtonian mirror is actually applied to the front face of the glass, not Typically, the primary mirror is made of glass. Here is how to make the grinding tool. 1. Get Price

Is grinding a mirror really that hard??? ATM, Optics and

Mar 16, 2002· If your intention is to make a 12" mirror and you are making a smaller mirror mostly to learn techniques, then you should reconsider the 8" and instead start with a 6". In my youth, I made many mirrors and helped a lot of amateurs make theirs, and making an 8" is a lot more work than a 6", but the learning process is the same.

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Joy of Mirror Making: Rough Grinding bbastrodesigns The center will deepen during the first stage of fine grinding as contact is achieved across the mirror face and fine grinding tool. On larger mirrors, the ring tool may leave the zones part way to the edge a little underground.

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Joy of Mirror Making: Rough Grinding . making a mirror grinding machine The Joy of Mirror Making Mel Bartels Rough Grinding The first milestone is putting a curve into the mirror face. The curve's depth dictates the mirror's focal length. The curve is ground into the mirror face using a grinding tool. The curve is pre-generated for you.

Joy of Mirror Making: Fine Grinding BBAstroDesigns

The goals of fine grinding are to prepare the curved mirror face so that it is ready for polishing and figuring and make any adjustments of the focal length. Previously in rough grinding we deepened the center of the mirror's face either by grinding with coarse grit and a tool, slumping in a kiln over a mold, or purchasing the glass pre-generated.

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Joy of Mirror Making: Rough Grinding Motorized grinding wheel on the end of along boom that is anchored that is moved Also there's the difficulty of creating a spherical curve in the mirror face.

Telescope Mirror Making: Part 2, Hogging to depth YouTube

Jul 10, 2012· This is part 2 of my video series documenting grinding and polishing a 12.5 inch telescope mirror. I'm using a spin or fixed post grinding machine. This video shows me using a sub-diameter tool

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Joy of Mirror Making: Rough Grinding Because the ring tool is metal, it changes shape very little while grinding on the glass. A tiled plaster tool grinds both tiles and plaster, with both starting flat,

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Joy of Mirror Making: Rough Grinding 31 rijen Rough grinding a telescope mirror. The Joy of Mirror Making is the distance from the mirror to a light source …

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Telescope Mirror Making: Part Rough Grinding This is part 2 of my video series documenting grinding and polishing a inch telescope mirror. I'm using a spin or fixed post grinding machine. This video shows a few initial stages of making a primary mirror for a telescope. After hogging the mirror blank to depth, the rough grinding stage begins.

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Joy of Mirror Making: Rough Grinding Mel Bartels. Rough grinding a telescope mirror. Mel Bartels. Rough Grinding. The first milestone is putting a curve into the mirror …

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Stellafane ATM: Mirror Making Overview. Mirror Grinding at the Spring 1998 Stellafane Mirror Workshop in the McGregor Observatory Rough Grinding. The purpose of rough grinding is to start to cut a spherical concave surface into the mirror blank. For a 6" mirror with …

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Make 7 more strokes, rotate the mirror 60 degrees clockwise, and the tool 20 degrees clockwise. Don't think in degrees, nor numbers, just spin it randomly. Rough grit breaks up quite fast, You will know that the grit is used up when the loud, crushing grinding noise disappears.

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Joy of Mirror Making: Rough Grinding Mel Bartels Mel Bartels Rough Grinding The first milestone is putting a curve into the mirror face The curve's depth dictates …

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Grinding Mirror Machine Pdf. 250tph river stone crushing line in Chile. 200tph granite crushing line in Cameroon. 250tph limestone crushing line in Kenya. 250tph granite crushing line in South Africa. 120tph granite crushing line in Zimbabwe. 400tph crushing plant in Guinea. Chat Online

Is grinding a mirror really that hard??? ATM, Optics and

Mar 16, 2002· If your intention is to make a 12" mirror and you are making a smaller mirror mostly to learn techniques, then you should reconsider the 8" and instead start with a 6". In my youth, I made many mirrors and helped a lot of amateurs make theirs, and making an 8" is a lot more work than a 6", but the learning process is the same.

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