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Fast Mirror Grinding & Polishing - The ATMs Workshop

Nov 15, 2001 · Fast Mirror Grinding and Polishing Miscellaneous Tips and Techniques . John D. Upton November 15, ... I used a suspension of the same 9u abrasive I used in the final stage of fine grinding. ... Polishing pads applied to a 9 inch grinding tool. Another local ATM has also tried the polishing pads with abrasive and CeO. His own 17.5" mirror took ...

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CONSUMABLES 2019 - sunpro.tw

NEW: GALAXY fine grinding disc Contero H 31 Diamond grinding foils, metal bond 32 Zirconia aluminum oxid grinding papers for coarse grinding 32 Silicon carbide grinding foils 33 Adhere carrier discs, double-sided 33 Alumina grinding foils 34 Silicon carbide grinding paper, with foil reverse back 35 Silicon carbide grinding papers 36-39 Clamping ...

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22 inch update, fine grinding

ATM (Amateur Telescope Making) Fine Grinding The 22" Mirror by Jerry Wright (Scroll down for photos) After completing generation of the f/3 curve and smoothing to 220 grit with the 6.5" steel tool, I cast plaster tools for fine grinding, polishing, and figuring.

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10Inch Ritchey Chretien Cassegrain ATM Project

I went through fine grinding the mirrors using grit: 220, 400, 600, 9micron and 5micron. After grinding I wanted to keep the grinding tool available in case I had to redo some fine grinding. I cast another tools from Pourstone and sealed it with epoxy resin. Then a pitch lap was poured on it and polishing began.

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Mirror grinding - scopemaking

"Painting" the whole tool with epoxy or boat varnish will be just fine. On all the ATM webpage's and books you will see neat, equally sized, equally spaced tiles. The key to successful mirror grinding is randomness in stroke numbers and tool and disc rotation.

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"Fine grinding" ATM discussion 9/06 - retrotechnology

"Fine grinding" ATM discussion 9/06 Introduction. The following are exerpts of a conversation between Gordon Waite and others with Henry Sonntag, who has questions about the fine grinding .

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Thin Telescope Mirror Grinding Advice

Grinding thin telescope mirror blanks: Thin glass mirror making techniques differ only slightly from "standard" mirror making practices. Keep these principals in mind when grinding and polishing your thin mirror blank, and you'll be fine.

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ATM's Resource List - atmslist.blogspot

May 24, 2015 · Other Cool ATM Sites . Mel Bartels Telescope Making site Mel is one of the few people in the world who can grind a thin mirror, design a lightweight mount for it, build the mount, design electronic controls for it, build them, program them, and more. Plus he gives much of his work away. A "Must See" in the ATM world. Check it out! Stellafane Every ATM should go to Stellafane at least once.

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Stellafane ATM: Fine Grinding

Check that you are making progress towards "good contact", which is ATM-speak for getting really spherical. Use the Pencil Test to see how you are doing on your first two fine grinding grits, and don't move on until you have achieved good contact.

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22 inch update, fine grinding

ATM (Amateur Telescope Making) Fine Grinding The 22" Mirror by Jerry Wright (Scroll down for photos) After completing generation of the f/3 curve and smoothing to 220 grit with the 6.5" steel tool, I cast plaster tools for fine grinding, polishing, and figuring.

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Metallography - testing equipment with proven ATM quality

The grinding & polishing process takes place using a unit with the same name; either per hand, as for example with pre-grinding on the pre-grinding unit ("Jade"), or conversely automatically – which is more normal for today's metallography laboratories.

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Metallographic Polishing Cloths — Mager Scientific

Fine Grinding General Polishing Low Nap Manual Polishing Softer Materials 5 - Cloth Material Chemo-textile Flocked Synthetic ... ATM $188.00 View full details 92002558 Polishing Cloth Gamma 200mm PSA 5/box ATM $135.00 View full details ...

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Lens and Mirror Making for the ATM #4 - YouTubeClick to view on Bing13:08

Feb 07, 2013 · Lens and Mirror Making for the ATM #4 Ed Jones. Loading... Unsubscribe from Ed Jones? ... Fine grind (smoothing) Category Science & Technology; Show more Show less. Loading...

Wooden Telescope Part 1: the Mirror: 14 Steps (with Pictures)

Wooden Telescope Part 1: the Mirror: This is the first of a 2 part Instructable explaining how I built a wooden telescope from scratch. In this part, I will show you how you can build the key element of a telescope: The primary mirror.A good mirror will show you details on the moon, ...

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Polishing - Amateur Telescope Making - India

Amateur Telescope Making - India is the site created, ... The polishing operations quite similar to the fine grinding or smoothing operation except for one important difference: smoothing is done by grit or emery, free to move between the tool and mirror, while polishing is a scraping or shaving action done by rouge particles embedded in a ...

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AP Chemistry Test Review (1/7/13) Flashcards | Quizlet

6. A kinetics experiment is set up to collect the gas that is generated when a sample of chalk, consisting primarily of solid CaCO3, is added to a solution of ethanoic acid, CH3COOH. The rate of reaction between the CaCO3 and CH3COOH is determined by measuring the volume of gas generated at 25oC and 1 atm as a function of time.

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Herb's Glass & Scratches at fine grinding

Herb's Glass and Scratches at fine grinding. During 2005 I'm working on an 8-inch f/5.5 mirror, as part of the STAR Astronnomy ATM group.This page is about my grief over scratches on my nice little mirror during fine grinding with a tile tool; followed by some homework and sage advice on how to avoid these problems, and how to fix them.

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Sample Preparation | OBLF Spectrometry

OBLF's ASM 1800 automatic sample grinding machine was specially developed for customers whose line of business demands automatic preparation of recurring sample types for spectrometer analysis.The fact that this sample-preparation machine was developed in-house by the same company that produces the spectrometer itself gives customers the certainty that the machine satisfies all requirements ...

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Telescope Making Supplies - willbell

Super fine, smooth cutting, scratch free final stage abrasives.. Final lapping is the key to smooth, regular surfaces that polish out quickly with no turned edges. The professional optician knows that a very fine, closely controlled abrasive makes it possible to grind out in a few minutes slight irregularities which would take hours of polishing to correct.

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Joy of Mirror Making: Introduction - bbastrodesigns

Fine grinding. A series of ever smaller grits are employed in order to repair the damage caused by rough grinding, concluding with aluminum oxide which leaves much smaller pits and fewer fractures compared to the silicon carbide. ... ATM's Guide to Setting up a Home Optics Shop, Tips for Making Optical Flats - Norman Rember's Making a Refractor ...

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