rough grinding atm

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  • Struers, Buehler, ATM, Leco, Allied High Tech, SBT

    CAPABILITY: Cutting Rough cutting max sample size :50 X 50 cm Precision cutting : 160 X 50 mm / 70 mm Dia. Low speed : max dia. 30 mm Wire saw : 45 X 45 X 20 mm (max. sample size) Mounting Cold mounting clear epoxy 8 hour cure room temp. (very low

  • Metallographic Grinding & Polishing Machines

    Grinding and polishing is the final stage in the metallographic sample preparation process and consists of several steps. Each step uses finer abrasive than the previous one, the ultimate goal being to produce a deformation-free, scratch-free and highly reflective sample surface. The sample may need to be examined, either etched or unetched, to ...

  • Mirror-Making Workshop

    Set up & rough grinding: includes Getting set up/overview, Making the Tile Tool, Rough grinding Fine grinding: includes Fine grinding, Measuring Sagitta Polishing: Foucault Testing Ronchi testing Spectators are welcome to look and listen, but please don''t touch

  • Fast Mirror Grinding & Polishing

     · Rough grinding operations are most effective when the coarse grit rolls between the tool and the glass causing a fracturing of the surface. My grinding wheel method kept the grit from easily rolling under the rough textured tool.

  • Metallographic Grinder/Polisher Machines — Mager Scientific

    ATM . The Qpol 250 A1-ECO (Saphir 250 A1-ECO) is a single-wheel grinding and polishing machine for working wheels Ø 200/250 mm which is conveniently operated by a 4.3" color touch screen. Entire preparation methods may be edited, stored, and protected by a user account management. Pressure, speed, and rotational direction of the polishing ...

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  • mirror grinding machines

    21-02-2015· Page 1 of 2 - Mirror grinding machine-runout - posted in ATM, Optics and DIY Forum: I am in the process of making a fixed post mirror grinding machine, big enough for a 20 inch mirror. I have now got the motor, pulleys, two shafts and turntable all together and working.

  • Stellafane ATM: Grits, Polish & Pitch

    Stellafane ATM: Grits, Polish & Pitch

  • Issues with Rough Grinding

     · Issues with Rough Grinding - posted in ATM, Optics and DIY Forum: Hi, I am in the process of rough grinding a 12.5 diameter x 1.5 thick F6 mirror blank that I cast myself in a kiln and need some help/advise. I am using a 9 diameter tile tool (see pic below

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  • Struers, Buehler, ATM, Leco, Allied High Tech, SBT

    Rough cutting max sample size :50 X 50 cm Precision cutting : 160 X 50 mm / 70 mm Dia. Low speed ... (very low shrinkage) Acrylic 10 min. cure room temp. Grinding / polishing (wet or dry) up to 12 inches platen Grinding Maxi sample size: 3 inches Ø or 3 ...

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  • FOOTCANDLE LIGHT GUIDE

    ATM 20 10-40 15 Vertical at face of ATM NOTES: • This guide is based on information • gathered from the IES ''The Lighting Handbook'' 10th Edition. It is highly recommended that all lighting professionals refer to the full IES guide when specifying • At least half

  • Struers, Buehler, ATM, Leco, Allied High Tech, SBT

    Rough cutting max sample size :50 X 50 cm Precision cutting : 160 X 50 mm / 70 mm Dia. Low speed ... (very low shrinkage) Acrylic 10 min. cure room temp. Grinding / polishing (wet or dry) up to 12 inches platen Grinding Maxi sample size: 3 inches Ø or …

  • Polishing

    From grinding to super-finishing, the aim is to create more and more fine scratches in order to obtain a mirror polish. GRINDING For the grinding stage, PRESI manufactures and designs a wide range of diamond discs (with resin or metallic bond), lapping abrasives and abrasive papers for the dressing and roughing of materials that guarantee a saving in polishing time and a perfect flatness.

  • Amateur Telescope Making edited by Albert G. Ingalls

    These books are a rearrangement of the original three-volume Amateur Telescope Making classics. Insofar as possible similar items are now grouped together; each as a Chapter within a descriptive Part. Edited by Albert Ingalls Volume 1, Subjects covered: Newtonian Telescope Mirror Making; Optical Testing; Workshop Wisdom; and Observatory Buildings. 6.00" by 9.00", 590 pages, hardbound,

  • ATM

    ATM (Amateur Telescope Making) 22" f/3 Mirror Project. by Jerry Wright. Play Video Clip: Rough grinding the 22" mirror on the John Wikswo machine. The focal length of the finished mirror will be 66" (f/3). Play Video Clip: Rough grinding continues but the desired curve depth (sagitta) is …

  • Metallographic Specimen Preparation Basics

    grinding, rough polishing, final polishing, etching, microscopic analysis, and hardness testing. Documentation - Metallographic analysis is a valuable tool. By properly documenting the initial specimen condition and the proceeding microstructural ...

  • rough grinding machine

    Stellafane ATM: Rough Grinding Rough grinding is often called "Hogging Out", as your goal is to remove the majority of the glass needed to form the curve of your mirror It is not particularly elegant work, being the noisiest and messiest part of the whole mirror making process GOAL: You have completed rough grinding when you have:.

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  • Table of Contents

    iv Contents 3.4 Important Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 3.4.1 The Resolving Power of an Instrument ...

  • Stellafane ATM: Rough Grinding

    Rough grinding is often called "Hogging Out", as your goal is to remove the majority of the glass needed to form the curve of your mirror. It is not particularly elegant work, being the noisiest and messiest part of the whole mirror making process.

  • How to Make a Telescope

    10.5. Rough Grinding, Fine Grinding and Smoothing 10.6. Optical Testing of the Window 10.7. Polishing and Retouching 10.8. Quantitative Testing and Data Reduction 11. The Eyepiece 11.1. Role of the Eyepiece and its Selection 11.2. Principal

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  • Metallographic Grinder/Polisher Machines — Mager Scientific

    Qpol 300 A1-ECO Grinder / Polisher 10-12in. ATM . The Qpol 300 A1-ECO is a single-wheel grinding and polishing machine for working wheels Ø 250/300 mm which is conveniently operated by a 4.3" color touch screen. Entire preparation methods may be edited, stored, and protected by a user account management.

  • ATM

    ATM (Amateur Telescope Making) Rough grinding the 22" mirror on the John Wikswo machine. The focal length of the finished mirror will be 66" (f/3). Rough grinding continues but the desired curve depth (sagitta) is getting closer. Desired curve depth reached, now the curve needs to be spread out to the mirror''s edge. 120 grit fine grinding.

  • Hogging out | Telescope Building

    Hogging out. The strategy here is to use a "ring tool" to "hog out" the spheroidal curve roughly. I''ve decided to grind to f/6.25 for a focal length of 78 inches. The ring tool: a 6″ steel disk about 1/2″ thick. Folks on campus helped me with this.

  • Ed Grinds a Mirror

    -Ed 5/29/00) Chapter One: Rough Grinding, May 28, 2000 I arrived on a cool Sunday afternoon in May, and started grinding with five other club members in a local barn. Right away, there was pressure on me; I had missed the first two-hour grinding session and everyone was well ahead of …

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  • Mirror grinding

    First phase : rough grinding (or hogging out) In this stage of grinding we want to dig out the flat glass blank, in other words, create a saggita. Saggita is a section of a sphere, its radius of curvature (ROC) is TWICE as long as the focal length of the mirror.

  • Articles – gordtulloch

    ATM Journal 1: Introduction and Design Notes ATM Journal 2: Getting Ready to Push Glass ATM Journal 3: Rough Grinding ATM Journal 4: Fine Grinding ATM Journal 5: Polishing Your Mirror ATM Journal 6: Testing Your Mirror ATM Journal 7: Testing Your

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