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  • Rough GrindingFine Grinding Telescope Building

    I built a "grinding board." It raises the grinding level seven inches above the table top for the sake of my back. I made it out of particle board scrap. I found a 17" round of pine at Home Depot for 4. The disk sits on three furniture slides hammered into the particle board box. Rough grinding a telescope mirror. Mel Bartels "Remembering" Imagenes De Telescopios Casero Universo Fiesta De Estrellas 15 De Enero Prismáticos Luces Proyectos Con Troncos. Mark Moraes John Lowry Dobson RIP. September 14 1915January 15 2014

  • Joy of Mirror Making Rough Grinding Telescopio Galaxia

    Rough grinding a telescope mirror. Mel Bartels "Remembering" Imagenes De Telescopios Casero Universo Fiesta De Estrellas 15 De Enero Prismáticos Luces Proyectos Con Troncos. Mark Moraes John Lowry Dobson RIP. September 14 1915January 15 2014 I built a "grinding board." It raises the grinding level seven inches above the table top for the sake of my back. I made it out of particle board scrap. I found a 17" round of pine at Home Depot for 4. The disk sits on three furniture slides hammered into the particle board box.

  • Telescope Mirror Making

    Wood I don t hear a lot about people using wood although I know Mel Bartels uses it for his polishing tools. For grinding the back of my 12" mirror I used an 8" disk of 3/4" particle board glued tiles to the front with epoxy and coated the back and sides with polyurethane. It DesigningMirror Grinding Machine I began by measuring the sizes of what I already had a 1/3 hp 1750 rpm electric motor and a 25 1 geared speed reducer. Then I took a rough cut at the

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    Trash Can 32-Gallon Greenstone Plastic Wheeled Trash Can with Lid. Model #25532-R1GRS. (116) Write a review. for pricing and availability. 31-Gallon Silver/Galvanized Metal Trash Can Rough Grinding Wheels Norton Abrasives United Norton rough grinding wheels are designed to handle the most severe grinding application from heavy stock removal to rough blending. Their durability and fast cutting action ideally suit maintenance metal fabrication and welding applications.

  • Stellafane Links Page

    Stellafane External Links. For the convenience of our readers we provide links to other web sites that offer additional or supplementary information to that provided on our Stellafane website. Mirror Grinding Machine G. W. Ritchey FlickrPhoto Sharing grind a series of telescope mirrors starting with a 24-inch and then a 60-inch mirror for a telescope initially intended for

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    As your local Ace Hardware our store is a member of the largest retailer-owned hardware cooperative in the industry. Ace Hardware began as a small chain of stores in 1924 and has grown to include more than 4 600 stores in 50 states and more than 70 countries.As part of a cooperative every Ace Hardware 31 rows · Mel Bartels Rough Grinding The first milestone is putting a curve into the mirror face. The curve s depth dictates the mirror s focal length. The curve should be spherical. Creating the curve can be done by several methods The curve is ground into the mirror face using a grinding tool. The curve is pre-generated for you.

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    Dec 02 2018 · Hi guys these are not my edits creds to the ppl that made them. Check them out on instagram their username is on the watermarker Wooden Telescope Part 1 the Mirror 14 Steps with Pictures. Wooden Telescope Part 1 the Mirror 14 Steps with Pictures More detailed article about my mirror I wonder if anybody ever tried to build a home made cnc rotary grinding

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    Wooden Telescope Part 1 the Mirror 14 Steps with Pictures. Wooden Telescope Part 1 the Mirror 14 Steps with Pictures More detailed article about my mirror I wonder if anybody ever tried to build a home made cnc rotary grinding polishing machine for parabolic mirrors Using computerised machines arduino or rasperry for example could reduce the errors and production time just an idea maybe Telescope projects range from around 4" in aperture up to and including at least 40" in aperture. Some of us are building telescopes some are grinding and polishing mirrors some of us are repairing telescopes some of us are watching learning and just hanging out.

  • Building a reflecting telescope Yahoo Answers

    Oct 30 2009 · Hogging the curve out to F4 or F5 will save weeks of rough grinding and is normally done with a diamond wheel cutter or you can buy a blank already hogged out. As your local Ace Hardware our store is a member of the largest retailer-owned hardware cooperative in the industry. Ace Hardware began as a small chain of stores in 1924 and has grown to include more than 4 600 stores in 50 states and more than 70 countries.As part of a cooperative every Ace Hardware store is independently owned.

  • Hot Sale Gold Hammer Crusher Company

    Wooden Telescope Part 1 the Mirror 14 Steps with Pictures. Wooden Telescope Part 1 the Mirror 14 Steps with Pictures More detailed article about my mirror I wonder if anybody ever tried to build a home made cnc rotary grinding polishing machine for parabolic mirrors Using computerised machines arduino or rasperry for example could reduce the errors and production time just an Stellafane External Links. For the convenience of our readers we provide links to other web sites that offer additional or supplementary information to that provided on our Stellafane website.

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    grinding sag ore. Grinding in miningEnergy efficient solutions to maximize grinding productivity and profitability in the mining industry Every mining operation has a unique grinding process. has experience of over 8 000 grinding mills globally including manufacturing and delivering the largest SAG/AG mills in the world. Get price For the fine grinding another stroke is used the W-stroke where the upper disk is moved along a W-shaped path over the other disk. The W is about a quarter of the diameter of the mirror wide and a third of the diameter high. It s also not neccessary any more to apply pressure on the upper disk as was the case with the rough grinding.

  • homemade mirror grinding machinebaculit

    Making a homemade mirror grinding machine ATM Optics. Mar 06 2006 Making a homemade mirror grinding machine posted in ATM Optics and DIY Forum I want to make a motorized mirror grinder any good info on this i have a couple geared motors low speed high torque. Jan 17 2019 · Ken Bartels . 10 months ago from North Pittsbugh PA. Hi we had my wife back home help us with the last-minute reservations. We had rough ideas of where we d be each night then as we got closer we coordinated with our home-based helper. I recommend iExit mobile app. It will show you the next several exits what s at each exit (food fuel

  • Telescope Mirror Grinding Machines Crusher Mills Cone

    Mirror Grinding Machine G. W. Ritchey FlickrPhoto Sharing grind a series of telescope mirrors starting with a 24-inch and then a 60-inch mirror for a telescope 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

  • Telescope Mirror Making

    Wood I don t hear a lot about people using wood although I know Mel Bartels uses it for his polishing tools. For grinding the back of my 12" mirror I used an 8" disk of 3/4" particle board glued tiles to the front with epoxy and coated the back and sides with polyurethane. It Apr 06 2020 · Those rocks weren t strong enough to close the hole. Light kept helping plants not go astray. Hope refocusing renews its goal Pursuing evermore without delay. Arise and praise. Celebrate and stay. Though nighttime blindness closes sleepy eyes Truth lifts morning with a fresh surprise. Linked to the Cosmic Photo Challenge where Dale offers the prompt

  • Stellafane ATM Rough Grinding

    For rough grinding a 6" mirror about 1/2 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 spray bottle). When grinding thin mirror blanks be conscious of downward pressure which if excessive may bend the mirror blank momentarily out of shape. While this is not a problem during rough grinding (as the amount of flex is exceedingly small) the effect becomes important as you reach the later stages of making your telescope mirror.

  • Boys state golf Birdie on his final hole as prep golfer

    May 22 2019 · Kluver with a 3-wood blasted his second shot out of the rough to in front of the green on the 546-yard hole. His chip shot landed a foot in front of the pin and a Sep 20 2019 · Area 51 Mania Naruto runner becomes viral sensation.

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    Joy of Mirror Making Rough Grinding Mel Bartels Rough Grinding The first milestone is putting a curve into the mirror face. The curve s depth dictates the mirror s focal length. May 22 2019 · Kluver with a 3-wood blasted his second shot out of the rough to in front of the green on the 546-yard hole. His chip shot landed a foot in front of the pin and a tap-in for

  • Joy of Mirror Making Rough Grinding Telescopio Galaxia

    Rough grinding a telescope mirror. Mel Bartels "Remembering" Imagenes De Telescopios Casero Universo Fiesta De Estrellas 15 De Enero Prismáticos Luces Proyectos Con Troncos. Mark Moraes John Lowry Dobson RIP. September 14 1915January 15 2014 Joy Of Mirror Making Rough Grinding. rough grinding a telescope mirrorhe joy of mirror making mel bartels rough grinding also theres the difficulty of creating a spherical curve in the mirror facehe grinding wheel on a boom approach is difficult because it is hard to anchor the mirror and the booms pivot so that they do not move in relation to each otherlass tools.

  • Fine grindingGhent University

    For the fine grinding another stroke is used the W-stroke where the upper disk is moved along a W-shaped path over the other disk. The W is about a quarter of the diameter of the mirror wide and a third of the diameter high. It s also not neccessary any more to apply pressure on the upper disk as was the case with the rough grinding. Grinding Sticks FINE TOOLS. Woodworkers and Carvers use grinding sticks for regrinding blades with irregular shapes. Inquire Now Joy of Mirror Making Rough Grinding Mel Bartels. Mel Bartels Rough Grinding The first milestone is putting a curve into the mirror face. The curve s depth dictates the mirror s focal length. The curve should be

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    Apr 06 2020 · Those rocks weren t strong enough to close the hole. Light kept helping plants not go astray. Hope refocusing renews its goal Pursuing evermore without delay. Arise and praise. Whether you buy or cast your own blank it often turns up to have rough sides with marks left from the kiln. The first thing you want to do is to flatten one side (it will become the back) by grinding it against a flat piece of glass (e.g. a old window).

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