mirror grinding telescopemirror grinding tool

mirror grinding telescopemirror grinding tool

Ritchey Telescope Mirror Grinding Machine

12 Inch Mirror Blanks, 3/4" Thick: $69 + S&H (16); Shipping prices are to the USA - not shipping outside the US, sorry Combined 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

Build your own telescope part 1: The mirror – Thomas ...

May 30, 2014· This is how you make a telescope mirror out of a hunk of glass: Use a sand mixture and another piece of glass to grind away the middle of a concave shape. Repeat with finer and finer grit sand. Dave Barosso demonstrates the technique, but to do it yourself, try to visit one of the Telescope Makers Workshop 's classes on Friday nights in Oakland.

Machine grinding a 25" telescope mirror. ...

By continuously grinding the surface with grits and the tool, the glass becomes concave as the center is rubbed more often compared to the edged, and more glass is worn off. The grit size is incrementally reduced, from 80 at the beginning, to 2 microns at the end, as the mirror …

Stellafane ATM Main Page

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.

GRINDING A TELESCOPE REFLECTOR WITH TOOL …

(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 more or less flat. Now to 80 grit …

From Ring Tool to Tile Tool | Telescope Building

telescope mirrors, blanks, tools, testers, grinding materials, polishing materials, aluminising, mirror box, ronchi, laser, foucault, telescope mirror aluminising mirror size (ins) aluminium + …

Hand Grinding a Telescope Mirror | Make:

Ritchey Telescope Mirror Grinding Machine Caesar. Replicating ritchey mirror grinding machine atm optics. mar 06 2006 replicating ritchey mirror grinding machine posted in atm optics and diy forum ive just returned from a few days with friends in washington dc being aviators and aircraft builders we blew a whole day at the new air space museums new annex at dulles …

How to Make Your Own Telescope Mirror - Instructables

Please see the Buy Telescope Mirror Blanks page for low prices on plate glass mirror blanks. If you'd like to buy a complete mirror grinding KIT, with all abrasives and grinding tool included, please see the Buy Telescope Mirror Kits. website for the lowest prices on plate glass telescope mirror grinding kits.

Joy of Mirror Making: Rough Grinding - BBAstroDesigns

GRINDING A TELESCOPE REFLECTOR WITH TOOL-GRINDING DEVICE By George F. Tauchmann Grinding telescope reflectors of 15-inch diameter and over makes it necessary to employ a motor-driven turntable. Small mirrors are generally ground and polished by rotating the tool, fastened to the turntable, and working the mirror blank by hand

Buy mirror blanks for telescope making

When the wet comes to the end, stop grinding, separate the mirror and the tool, and more water and grit, then continue. If you have a tile tool, you can slop some water and grit on from the side without separating the mirror and tool, but don't drag the tool off on the edge of the mirror …

Mirror Grinding - Take A Class Or DIY? - ATM, Optics and ...

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. ... The grinding/polishing tool is held in place by the quill of the M-o-M.

Machine grinding a 25" telescope mirror. ...

After fine grinding is complete, the mirror must be polished. It is during polishing that you "figure" the mirror by using a different polishing stroke to change the mirror's spherical polished shape into a parabolic polished shape . See a related tutorial nearby titled, " Making A Mirror Polishing And Figuring Tool ".

Mirror Grinding Machine

May 30, 2014· This is how you make a telescope mirror out of a hunk of glass: Use a sand mixture and another piece of glass to grind away the middle of a concave shape. Repeat with …

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

First is to put the grinding platform where you plan on using it and put the tool blank (or mirror in the case of the Plaster Tool method) on it and screw (don't nail as you're going to have to remove the cleats when you change grits) the 3 pieces of wood for the cleats about equidistant around the tool so that they restrain the tool without ...

Stellafane ATM: Measuring Sagitta

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 and grinds faster, needing less abrasives and with these small sizes, the low expansion glass like Pyrex has no practical …

King Telescopes, telescope mirror blanks, using both ...

When ready to make a concave surface on the mirror you will need to have the mirror-glass-blanc and glass-grinding tool-disk and grinding grit, place the "tool" on a wet cotton rag (to prevent slipping" on a level work surface, sprinkle Carbo grit and little water on and grind-hogging with the mirror on top, making circular strokes with (1/3 min. of mirror overhanging, during …

Mirror grinding - scope making

By continuously grinding the surface with grits and the tool, the glass becomes concave as the center is rubbed more often compared to the edged, and more glass is worn off. The grit size is incrementally reduced, from 80 at the beginning, to 2 microns at the end, as the mirror reaches the desired radius of curvature (and focal length – the ...

tut44 Making A Mirror Grinding Tool - Asterism

We recommend Pyrex over plate glass simply because it is much easier to build your first mirror with pyrex. The low coefficient of expansion of Pyrex makes a difference during the grinding process. Plate Glass, particularly thin blanks, can be warped by the warmth of your hand, expandings the glass into the tool…

GRINDING A TELESCOPE REFLECTOR WITH TOOL …

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.

Rough Grinding of a Telescope Mirror | Guy's Math & Astro Blog

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 needed.

Dick Parker's Telescope Mirror Workshop: Cassegrain ...

Nov 16, 2012· Grinding 500 grit on a 25" f/3.0 meniscus mirror. Tool is a 19" glass tiled stone tool with about a 3" overhang and about 37 …

Making a Mirror. - Astronomy

When ready to make a concave surface on the mirror you will need to have the mirror-glass-blanc and glass-grinding tool-disk and grinding grit, place the "tool" on a wet cotton rag (to prevent slipping" on a level work surface, sprinkle Carbo grit and little water on and grind-hogging with the mirror on top, making circular strokes with (1/3 min. of mirror …