ABOUT GME

Welcome to GME

Founded in 1987, GME has attained 124 patents on crushers & mills over the past 30 years. More than 30 overseas offices not only manifest our popularity, but also solve your puzzles quickly in operation. So if you are looking for crushers or mills, GME deserves your attention!

GME gives itself over to the production of crushers and mills, which can be used in aggregate crushing, industrial milling and ore processing fields, such as sand making machine, portable crusher plant, vibrating screen and raymond mill, If you are engaged in these industries, why not choose GME?

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Hot Products

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Vertical Grinding Mills

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LUM Ultrafine Mill

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MTM Trapezium Mill

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Ball Mill

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MTW Trapezium Mill

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SCM Ultrafine Mill

Limestone Grinding Plant

The customer belongs to a well-known company in local community. The biggest difficulty in this project was small place. It had to consider both the maintenance space of the equipment and the transportation of finished products.

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Limestone Grinding in Belgium

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Limestone Grinding Plant

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Talc processing plant

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Ultrafine Powder Milling

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Trapezium Grinding plant

Booking Online

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Rough Grinding a 20 Quartz Telescope Mirror on the Fixed

Gordon Waite sets up his fixed-post mirror grinding machine to begin rough grinding on an 11 f/4.3 telescope mirror. He uses a grinding tool made from dental plaster and steel pieces to speed up grinding. Gordon shows the setup for spin grinding at high speeds and with added weights to get the job done as fast as possible.

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Rough grinding a 6 inch mirror

20-04-2005· Rough grinding a 6 inch mirror - posted in ATM, Optics and DIY Forum: I am following Texereaus book. I am rough grinding a 6 inch mirror an went from a chord stroke to a center over center stroke a little late in my rough grinding. I ran out of 80 Carbo and I think my mirror is still a little hyperbolic (although it looks ok against the template I made).

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TELESCOPE MIRROR MAKING HOW TO PART 1: Rough Grinding

03-04-2020· Welcome to my channel - in this video, we will begin to make a telescope mirror from scratch! I'll be showing you the basics of telescope mirror grinding!Her...

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Joy Of Mirror Making: Rough Grinding

Vertical grinding mill. Ultra fine vertical grinding mill. MTW european grinding mill. MB5X158 pendulum suspension grinding mill. Trapezium mill

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Stellafane ATM: Guide to Strokes

The Chordal Stroke. USE: Used at the beginning of rough grinding to initially "hog out" a lot of glass and generate the initial curve in the glass. MIRROR POSITION: Mirror on Top, Tool on Bottom ABRASIVE: Your coarsest grit (usually #60 or #80) PRESSURE: Firm downward pressure will result in short wets and faster glass removal. DESCRIPTION: With mirror on top, overhang mirror about 40% of its

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Mirror-o-Matic

Rough Grinding. Rough grinding (hogging out) is the first stage of grinding performed on a new flat blank and tool. The purpose of rough grinding is to generate a 'dish' in the center of the mirror. This dish is deepened until the correct radius of curvature (R.O.C.) is produced.

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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 .

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Joy Of Mirror Making Rough Grinding

Joy of Mirror Making Rough Grinding BBAstroDesigns The curve is ground into the mirror face using a grinding tool The curve is pre generated for you The curve is created by slumping the blank in a kiln over a mold Here are 42 inch 107cm and 30 inch 762cm mirrors slumped and annealed to F2 8 ready for fine grinding.

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Joy Of Mirror Making: Rough Grinding

Vertical grinding mill. Ultra fine vertical grinding mill. MTW european grinding mill. MB5X158 pendulum suspension grinding mill. Trapezium mill

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Large Thin Mirror Making

Preparation before grinding. Throw rough grit around the rim of the mirror, wet it down, grab a piece of metal, and grind in a nice rounded bevel 1/12" wide. Do this for the back side of the mirror also. As grinding proceeds, maintain the bevel.

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Build your own telescope part 1: The mirror – Thomas

Rough grinding. This step is about making one side of the glass concave. It will give your mirror its overall focal ratio. If you make the centre deep, you will end up with a fast telescope (e.g. F/D = 4) well suited for deep sky observations. On the opposite, a shallow mirror (e.g. F/D = 8) will be performing very well on planets and the moon.

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The 8.75" f/6.7 Mirror Grind

04-02-2017· There should be no further need for the mirror to be on the bottom. When the mirror is on top there is no need for the mirror's back to be perfectly flat, nor for the back edges to be bevelled. I would not flat the back as a little rocking will not materially affect the rough grinding you are doing now.

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Joy of Mirror Making: Rough Grinding

Nov 21, 2020 - This Pin was discovered by Fonte de Ideias. Discover (and save!) your own Pins on Pinterest

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Telescope Mirror Making: Part 3, Rough Grinding

23-09-2012· After hogging the mirror blank to depth, the rough grinding stage begins. In this video I am grinding with 60/90 grit. The wets are lasting about 90 second...

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Rough Grinding a 20 Quartz Telescope Mirror on the Fixed

Gordon Waite sets up his fixed-post mirror grinding machine to begin rough grinding on an 11 f/4.3 telescope mirror. He uses a grinding tool made from dental plaster and steel pieces to speed up grinding. Gordon shows the setup for spin grinding at high speeds and with added weights to get the job done as fast as possible.

Get Price

Mirror-o-Matic

Rough Grinding. Rough grinding (hogging out) is the first stage of grinding performed on a new flat blank and tool. The purpose of rough grinding is to generate a 'dish' in the center of the mirror. This dish is deepened until the correct radius of curvature (R.O.C.) is produced.

Get Price

Mirror grinding

A good starter size is the 150 mm (6") mirror. A 200mm (8") will also work. Most ATM books and websites recommend a Pyrex® mirror blank, but in my opinion, annealed plate glass is better for this first, "learn and practice" mirror.It is cheaper, it is softer and grinds faster, needing less abrasives and with these small sizes, the low expansion glass like Pyrex has no practical (visible at

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edge grinding mirror

fine grinding the mirror. After generating the mirror curve by rough grinding it remains for us to smooth it by fine grinding and polishing before finally correcting it to a parabola of revolution. Fine grinding is done in about the same way as the last wets of rough grinding, but with a series of finer and finer grits such as 100, 220, 320, and 500, and finishing with 5 micron (15 wets

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Rough Grinding a 20" Quartz Telescope Mirror on the Fixed

07-03-2010· This video shows how to setup a mirror grinding machine for fixed-post grinding, also known as spin grinding or spinning. After setup, you'll see how abrasi...

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Build your own telescope part 1: The mirror – Thomas

Rough grinding. This step is about making one side of the glass concave. It will give your mirror its overall focal ratio. If you make the centre deep, you will end up with a fast telescope (e.g. F/D = 4) well suited for deep sky observations. On the opposite, a shallow mirror (e.g. F/D = 8) will be performing very well on planets and the moon.

Get Price

Mirror grinding

A good starter size is the 150 mm (6") mirror. A 200mm (8") will also work. Most ATM books and websites recommend a Pyrex® mirror blank, but in my opinion, annealed plate glass is better for this first, "learn and practice" mirror.It is cheaper, it is softer and grinds faster, needing less abrasives and with these small sizes, the low expansion glass like Pyrex has no practical (visible at

Get Price

Large Thin Mirror Making

Preparation before grinding. Throw rough grit around the rim of the mirror, wet it down, grab a piece of metal, and grind in a nice rounded bevel 1/12" wide. Do this for the back side of the mirror also. As grinding proceeds, maintain the bevel.

Get Price

Telescope Mirror Making: Part 3, Rough Grinding

After hogging the mirror blank to depth, the rough grinding stage begins. In this video I am grinding with 60/90 grit. The wets are lasting about 90 seconds to 2 minutes. x. TELESCOPE MIRROR MAKING HOW TO PART 1: Rough Grinding 7:47. Welcome to

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Joy of Mirror Making: Rough Grinding

Nov 21, 2020 - Introduction to grinding polishing and parabolizing a telescope mirror

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Fast Mirror Grinding & Polishing

15-11-2001· The mirror ended up with a very smooth, zone free, nearly spherical figure ready for final figuring. Figure 1: 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 about nine hours to .

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Stellafane ATM:Mirror Making Myths

With the Mirror on top, the tool on the bottom, and coarse grit in between, we start grinding with the mirror overhanging the tool. We rub the center of mirror against the edge of the tool, and this wears a depression in the center of the mirror (the edge of the tool wears down also, so that the tool becomes convex (a "hill" in the center) and the mirror becomes concave (a shallow "bowl").

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Joy of Mirror Making: Rough Grinding

Nov 21, 2020 - This Pin was discovered by Gerry Germishuizen. Discover (and save!) your own Pins on Pinterest

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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 .

Get Price

Fast Mirror Grinding & Polishing

15-11-2001· The mirror ended up with a very smooth, zone free, nearly spherical figure ready for final figuring. Figure 1: 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 about nine hours to polish out completely.

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mirror grinding successful

Mirror grinding - scope making. The key to successful mirror grinding is randomness in stroke numbers and tool and disc rotation. Adding more randomness with a tile tool made from tiles that have been smashed with a hammer cant do any harm :) Always work wet!

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