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stellafane atm fine grinding

stellafane atm fine grinding

Fine grinding a 20 quartz telescope mirror. rough grinding on the fixedpost mirror grinding machine. hogging the curve on a 20 f4.5 quartz telescope mirror. skybadger mirror grinding machine. stellafane atm materials amp tools.

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  • 6Quot; F5 Newtonian For Real This Time Atm, Optics And

    6Quot; F5 Newtonian For Real This Time Atm, Optics And

    Page 1 of 11 6 f5 newtonian for real this time posted in atm, optics and diy forum: davidg was kind enough to give me a very nice pregenerated 6 f5 pyrex blank at stellafane (thanks again!) so that i could make a 6 f5 mirror. i had intended for my first mirror to be an f5 but i ran out of grit and decided that itd be easier to parabolize at f8.

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  • Fused Silica Primary 6Quot; Gregorian Atm, Optics And Diy

    Fused Silica Primary 6Quot; Gregorian Atm, Optics And Diy

    Page 1 of 4 fused silica primary 6 gregorian posted in atm, optics and diy forum: at stellafane this weekend i managed to score a 6 fused silica (quartz) disk about 1 thick. i dont think it was originally intended as a mirror blank, as it tapers by about 0.5 on the back side. it had duct tape on the back when i got it, as well as strange strips of adhesive stuff that is somewhat.

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  • Telescope Mirror Grinding Machine | Crusher Mills, Cone

    Telescope Mirror Grinding Machine | Crusher Mills, Cone

    Fine grinding a 20 quartz telescope mirror. rough grinding on the fixedpost mirror grinding machine. hogging the curve on a 20 f4.5 quartz telescope mirror. skybadger – mirror grinding machine. stellafane atm: materials amp; tools.

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  • Joy Of Mirror Making: Introduction Bbastrodesigns

    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. this stage is called fine grinding.

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  • Stellafane Atm: Mirror Making Overview

    Stellafane Atm: Mirror Making Overview

    Fine grinding. the purpose of fine grinding is to smooth the surface generated by rough grinding and to get good contact : details of each step are provided in subsequent pages, along with plans to build your own tester go back to the stellafane atm index page to find and read them.

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  • Mirrormaking Workshop Texas Star Party

    Mirrormaking Workshop Texas Star Party

    Fine grinding: includes fine grinding, measuring sagitta; polishing: foucault testing; ronchi testing; spectators are welcome to look and listen, but please dont touch anything unless invited by one of our instructors. lets get started! the stellafane telescope makers have a great website that will help you get started! overview of mirror.

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  • Homemade Telescope Making Google Search

    Homemade Telescope Making Google Search

    Finishing up fine grinding. as the grit sizes got smaller and smaller, the possibility of scratches from dust and stray grit particles increases. i was doing all my work in my dusty garage workshop and to help avoid scratches i attached a large sheet of plastic drop cloth on the ceiling above and around my grinding.

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  • Stellafane Atm: Rough Grinding

    Stellafane Atm: Rough Grinding

    For rough grinding a 6 mirror, about 12 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.

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  • How To Use A Grinder Bit For Mirror

    How To Use A Grinder Bit For Mirror

    How to use a grinder bit for mirror products. as a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any sizereduction requirements including, how to use a grinder bit for mirror, quarry, aggregate, and different kinds of minerals.

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  • Getting Started On My 6Quot; Mirror Blank Atm, Optics And

    Getting Started On My 6Quot; Mirror Blank Atm, Optics And

    Page 1 of 9 getting started on my 6 mirror blank posted in atm, optics and diy forum: years ago i began grinding a 6 mirror blank with the stellafane telescope makers in springfield vt. i lived in southern ct and worked as a planetarium supervisor so my attention got stretched thin and the mirror was one of the first things to drop. my wife and i moved to seattle for her career where i.

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  • Where To Buy Mirror Blanks Stellafane Links Are Half Dead

    Where To Buy Mirror Blanks Stellafane Links Are Half Dead

    Stellafane links are half dead. posted in atm, optics and diy forum: half the links on stellafane are dead. or do you want to avoid the grunt work and skip to fine grinding the curve to a good sphere edited by stargazer193857, 13 september 2020 02:47 pm. back to top 11 ppg677 ppg677. ranger 4.

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  • Help For A Beginner, Almost Done With Fine Grinding. Atm

    Help For A Beginner, Almost Done With Fine Grinding. Atm

    Help for a beginner, almost done with fine grinding. posted in atm, optics and diy forum: hello everyone, im almost done finegrinding my first mirror: an 8 inch f6 (which will end up being more like f5.5). im currently a couple laps into 9 micron alo2. ive been checking for good contact with the sharpie test multiple times with each grit, and ive had good contactup until now.

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  • Mirror Grinding Take A Class Or Diy Atm, Optics And

    Mirror Grinding Take A Class Or Diy Atm, Optics And

    Page 1 of 3 mirror grinding take a class or diy posted in atm, optics and diy forum: ive been interested in grindingpolishing my own newt mirror for a long time but dont know how to get started. as a beginner, would you recommend attending a workshop or class or is it possible to make a good mirror using other learning resources such as books and online videos.

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  • Mirror Grinding Kits

    Mirror Grinding Kits

    Mirror making material stathis' firstlight. grinding and polishing compounds i have nearly always in stock a complete material set includes silicon carbide grit 80, 180, 320, aluminum oxyde with specific flat grit shape and tight size distribution microgrit wca 25my, 15my, 9my, 5 my, 3 my, polishing powder cerskx (a very fine and pure cerium oxide) and optical pitch of 28 hardness the.

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  • Stellafane Atm: Guide To Strokes

    Stellafane Atm: Guide To Strokes

    Recorded at the stellafane mirror workshop no audio using very fine grit (aluminum oxide) but the same stroke, albiet with more effort and therefgore a slower pace, is used for rough grinding and polishing. this is an 8 mirror, so the stroke overhang is about 1.3 on each side for a 2.6 stroke length.

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  • Mirror Grinding Video Atm, Optics And Diy Forum

    Mirror Grinding Video Atm, Optics And Diy Forum

    I forgot all about that stellafane atm site. i just looked at it, pretty nice. but if you have never made a mirror, i still think the dobson video gives you a real appreciation of all the facets from grinding, to making a pich lap to polishing and figuring. it truely is a classic film to watch and enjoy. i hope you can somehow get your hands on it.

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  • Wanting To Grind A 20Quot; Mirror. Where Do I Start Atm

    Wanting To Grind A 20Quot; Mirror. Where Do I Start Atm

    Wanting to grind a 20 mirror. where do i start posted in atm, optics and diy forum: im a complete newbie on this, other than my huge enthusiasm for wanting to look up at the night sky through a telescope. i want to build a dobsonian using a 18 mirror. is this a tough undertaking and dangerous for a new person should i be really experienced before trying this.

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  • Question About Operating A Stellafane Foucault Tester

    Question About Operating A Stellafane Foucault Tester

    Question about operating a stellafane foucault tester posted in atm, optics and diy forum: hello, id like to make a foucault tester. i read stellafane instruction and im still not sure how to operate the tester, and have some questions about the parts: where do i put my eyes is it the same as hole (a) where the knife edge is the tutorial says turn the knob so the head rotate about the pipe.

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  • First Time Grinding Question Hogging Tool Atm, Optics

    First Time Grinding Question Hogging Tool Atm, Optics

    First time grinding question hogging tool posted in atm, optics and diy forum: im finally going to go for it and grind a mirror. im going to start with an 8 f 6.8 to match a scope ive already made for another mostly going by the stellafane website, but ive read some posts about using a ring tool or diamond tool for hogging and i want to try this.

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  • Stone Crushing Plant For Concrete Mixing 1

    Stone Crushing Plant For Concrete Mixing 1

    Stellafane atm fine grinding jaw stone crusher with iso90012008 reliable company ball grinding 03 rock phosphate grinding modern techniques list of heavy industries in kanpur worldcrushers stone crusher plant in sangli maharahtra pabrik suku cadang pasokan dan permintaan.

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  • Grinding Below Micron Size

    Grinding Below Micron Size

    Stellafane atm grits polish pitch. for hand grinding, the coarse grit sequence of 40, 60 , 80, 120, 220 is typical start at the grit size appropriate for your mirror diameter as given in the. fine grinding abrasive materials is typically needed to create particle sizes in the minus 50 mesh range 297 microns down to about 95 minus 325 mesh.

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  • Rough Grinding Machine

    Rough Grinding Machine

    Stellafane atm rough grindinginternal grinding machines cnc manual id. for rough grinding a 6 mirror about 12 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 this grinding approach is a.

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  • Use Of For Grinding Process

    Use Of For Grinding Process

    Stellafane atm: rough grinding this page describes the rough grinding process. before you start. this paper explores how a manufacturing process can use a systematic to eliminate the defects in a fine grinding process of an automotive company. this has what is the manufacturing process of grinding wheels,.

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  • Wooden Telescope Part 1: The Mirror : 14 Steps (With

    Wooden Telescope Part 1: The Mirror : 14 Steps (With

    Step 6: measure the sagitta. continue grinding until you get the desired curvature. to estimate the curvature, we will use a dial indicator to measure the sagitta. if you want to build a telescope for planets and moon observation, you will need a longer focal ratio (f8 or higher). this means a shallow mirror.

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  • Wooden Telescope Part 1: The Mirror : 14 Steps (With

    Wooden Telescope Part 1: The Mirror : 14 Steps (With

    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, pl.

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  • Stellafane Atm: Materials Amp; Tools

    Stellafane Atm: Materials Amp; Tools

    Your grinding stand should be about waist high, and it needs to be stable, as you will be vigorously pushing it from all directions. grinding on a bench with turntable at the 2000 stellafane convention.

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