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I couldn't help him with the former, but I could the latter. I had an idle mirror grinding machine (a modified MOM 20), so I volunteered to grind and polish his blanks and check for strain using the cross-polarized light test. Soon, three plate glass blanks arrived, two .
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Stone tools go back 3.3 million years. Pounding, scraping, knapping, grinding combined with fire, heat, melting leads us today to grinding telescope mirrors from glass. Making a telescope mirror is one of the most satisfying and sublime joys you will experience. It's also arguably the most accurate surface made by man or machine.
A wide variety of mirror polishing machine options are available to you, There are 109,383 mirror polishing machine suppliers, mainly located in Asia. The top supplying countries or regions are China, Taiwan, China, and India, which supply 99%, 1%, and 1% of mirror polishing machine respectively.
Grinding and Polishing / 37 Fig. 4.1 Automatic grinding and polishing machine Subroutine 4.1: Cleaning Ceramographic Mounts After each abrasive step, rinse each specimen in warm tap water. Do not remove specimens from the holder if an auto-matic polishing machine is being used. Use distilled or deion-ized water if the tap water is too hard.
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 (visible at ...
Sep 26, 2006· Grinding and polishing your own mirrors is a long, arduous process. Instead of lapping the blank by hand, Laurie Hall built this mirror grinding machine from scratch.
How I make Telescope Mirror Blanks. How I make Telescope Mirror Blanks ... Soda lime plate glass will work fine for an amateur telescope once it reaches thermal equilibrium. ... Here is the super simple grinding machine I built to true up the edges of the blanks. It is just an angle grinder with a masonry wheel mounted on the edge of a table.
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Sep 26, 2006· Grinding and polishing your own mirrors is a long, arduous process. Instead of lapping the blank by hand, Laurie Hall built this mirror grinding machine from scratch.
small mirrors, plate glass will work fine too. Telescope mirrors are relatively thick. The concave shaped face is made by repeatedly ... After fine grinding is complete, the mirror must be polished. It is during polishing that you "figure" the mirror by using a different
This is why you don't want to make mirrors to be worked on machines too thin. For 16" to 18" mirrors, 1.62" thick is the thinness I would recommend. There are several ways to support the grinding and polishing machine turntable, but first make sure the turntable itself is rigid. It .
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 a telescope mirror. The Joy of Mirror Making Mel Bartels Rough Grinding ... This rapidly tears into the glass, creating a curve quickly. I generated a 16 inch [41cm] f/6 plate glass mirror in about 4 hours with 80 silicon carbide grit. When the sound dies down, recharge with another sprinkle of grit and a spritzing of water. Many ...
Oct 30, 2007· 'm fine grinding my 12" plate glass mirror blank with the M-O-M by Dennis Rech. It's an automatic mirror making machine that takes the "caveman" work out of mirror grinding.
Plate Grinding. Hill Acme Reciprocating Table Type Grinding Machines are designed for producing high quality finishes a variety of ferrous and non-ferrous metallic sheets or plates. The reciprocating grinder is designed with either clamps or a vacuum system to hold media in place as it travels back and forth under the grinding head until the ...
MIRROR GRINDING MACHINE. I made my first mirror grinding and polishing machine over thirty years ago. It used the working principle of the machine illustrated at "A" Fig.3, Page 163, "Amateur Telescope Making" Book 1. A bowl which rotated was fitted to the spindle. I also built another machine .
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. ... An extra plate of 3/4 inch wood was screwed to ...
Grinding On the picture below the machine is fine grinding an 8 inch mirror with an 71% tool (143 mm diameter) and 9 micron aluminium oxyde. The bent lines on the mirror are the effect of the tool turning - with respect to the mirror - faster at the central part of the mirror as compared to the edge zones.
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
Fixed-post machine grinding is where the mirror is on a turntable rotating around 20 PRM [speeds vary], and a 75% tool is on top. They are already curve-generated. The tool is hanging over the mirror by 1/6 the diameter of the tool, or about 1/8 diameter of the mirror, and is fixed in this position.
The Joy of Mirror Making ... It's also arguably the most accurate surface made by man or machine. If the mirror is expanded to the size of a football field, then the mirror's surface will be smooth to 1/1000 inch or 1/30 millimeter! Polishing a 10.5 inch [27cm] F/2.7 plate glass meniscus shaped mirror.
Light guide plate mirror grinding machine TAO SHUO ENTERPRISE CO.,LTD. In 2002 to develop large-profile surface grinding machine chaos, chaos profiling of grinding size of 4 feet × 6M quality has reached the standard of Japanese imports.: 2003 photoelectric technology important to set up the mother - light guide plates fired die-manufacturing department, imports of the most senior SUS430 and ...
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