Newport Glass Works, LTD. Grinding, Polishing and Figuring ...

    Grinding the back flat is just the first step in preventing astigmatism. The next step is the proper mirror support. Fine grind and polish the mirror face up. A thin mirror bends over the edge of the tool if it's worked on top, so the problem reduces to supporting the mirror from its underside.

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    tut44 Making A Mirror Grinding Tool - asterism

    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 .

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    Fast Mirror Grinding & Polishing - The ATMs Workshop

    Nov 15, 2001 · There are numerous techniques that have been described over the years for grinding and polishing mirrors. Some of these techniques have been devised for the specific purpose of making the mirror grinding and polishing operations easier or faster. I have tried out many of these ideas and techniques at one time or another.

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    Mirror, mirror | symmetry magazine

    After more than six years of grinding and polishing, the first-ever dual-surface mirror for a major telescope is complete. In March 2008, a group of people gathered around a giant, red oven in a six-story workshop space beneath the bleachers of the University of Arizona football stadium. The oven ...

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    Waite Research :: 24" F3.5 Mirror Fabrication

    Plus the grinding operation is so noisy that I have to wear earplugs for the coarser grades. After grinding, polishing and figuring, this 24" F3.5 mirror produced a very nice test result. The larger and the faster the mirror, the tougher it is to get a great surface.

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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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    So you really want to build a Telescope Mirror. - Astronomy

    So you really want to build a Telescope Mirror. ... want to be very careful with the Cerium Oxide as that part of the making of a mirror is a different process from the grinding of the mirror and you don't want to get the abrasive grits mixed up with the Cerium Oxide which is to be used as the polishing compound.

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    Mirror grinding noise - Nissan Forum | Nissan Forums

    Apr 15, 2016 · I've noticed a weird "grinding" sound when I put my car into reverse and the mirrors auto-tilt. Wondering if there is any type of lubricant I could spray that .

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    Mirror grinding | astronomia, telescopios universo | Space ...

    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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    Fast Mirror Grinding & Polishing - The ATMs Workshop

    Nov 15, 2001 · There are numerous techniques that have been described over the years for grinding and polishing mirrors. Some of these techniques have been devised for the specific purpose of making the mirror grinding and polishing operations easier or faster. I have tried out many of these ideas and techniques at one time or another.

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    Astro-Tel - Mirror grinding machine

    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 .

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    Ed Grinds a Mirror -

    May 28, 2000 · Introduction: This summer (2000) I joined a mirror-grinding class hosted by our local club's ATM committee. Despite having looked through hundreds of telescopes through my observing career, I had to admit I had never ground my own mirror; in fact, my knowledge of the whole subject was rather sketchy at best.

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    Training: Polishing the Mirror and Grinding the Stone

    I assist you in the grinding and polishing process. In turn, you assist me, and when we are finished we are smoother, happier and better for the effort. We continue to practice polishing the mirror and grinding the stone until the mirror of our spirit is a perfect reflection of true self and the surface of the stone is as smooth as the mirror.

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    mirror grinding - YouTubeClick to view on Bing4:19

    Oct 05, 2013 · this is a 13 inch plate glass mirror blank that i cast myself. it has some issues, but i think it will yeild a good mirror. in this vid, i start some hogging work, this is after flattening the ...

    Author: rdjones101
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    Stellafane ATM Main Page

    There are a lot of misconceptions about making a mirror - read this even if you don't plan to make a mirror, but just want to know how it is done - with your bare hands and a few simple tools, you can grind and figure a fine mirror with a surface accurate to a few millionths of an inch! Telescope Formulas and Design Comparator

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    Fixed post mirror grinder advice - DIY Astronomer ...

    Nov 01, 2011 · Hi AllWeve been having some idle discussions about grinding mirrors here. In particular, weve been discussing building a fixed post mirror grinding turntable for cutting mirrors up to about a 24inch diameter to spherical. Its only a pipe dream at the .

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    Stellafane ATM: Fine Grinding

    GOAL: You have completed fine grinding when you have: Smoothed the mirror surface until it feels "buttery soft" to the touch with pits approximately 5 microns in size so that it is ready for polishing. Shaped the mirror surface to be very closely spherical, as indicated by the Pencil Test.

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    Mirror-o-Matic

    May 02, 2002 · After the mirror has been rough ground to the proper sagitta, fine grinding can begin. Fine grinding on Mirror-o-Matic can be done with the stationary overarm method. The overarm does not need to swing side to side if the tool is large enough to cover half the mirror diameter when in the neutral position described below.

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    Stellafane ATM: Fine Grinding

    GOAL: You have completed fine grinding when you have: Smoothed the mirror surface until it feels "buttery soft" to the touch with pits approximately 5 microns in size so that it is ready for polishing. Shaped the mirror surface to be very closely spherical, as indicated by the Pencil Test.

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    Glass and Mirror Grinding - C.R. Laurence

    C. R. Laurence is the world leader, wholesale distributor to the Glazing, Industrial, Construction, Architectural, Hardware and Automotive Industries, supplying railing, windscreen, standoffs, and other supplies to major industries and manufacturers.

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    How I built an edge grinder for telescope mirror blanks.

    I have been casting my own telescope mirror blanks for a few years now. How I do it is explained elsewhere on this web site. The casting process leaves the blanks slightly oversize, and the edges of the blanks rough, and not quite perfectly round. I have tried various methods of cleaning up the edges of .

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