This is a machine that comes in three versions. It was designed and build by Dennis Rech of Olympia, Wa. One of the best known mirror makers, Carl Zambuto uses these machines. Dennis even markets a kit for each machine. His CD with the plans for each and materials lists is worth the $15.00.

Astro-Tel - Mirror grinding machine MIRROR GRINDING MACHINE. I made my first mirror grinding and polishing machine over thirty years ago. It used the working principle of the machine illustrated at "A" Fig.3, Page 163, "Amateur Telescope Making" Book 1. A bowl which rotated was fitted to the spindle. I also built another machine of the same type.

Glass Machine Polishing Mirror JFE-261 PLC Glass Beveling Machine For Grinding And Polishing Mirror. $17,500.00-$19,500.00/ Piece. 1.0 Pieces (Min. Order) 3 YRS CN. Supplier.

Roughness in stroke numbers, tool rotation, and disc rotation are all important factors in good mirror grinding. Making a tile tool out of tiles that have been broken with a hammer can help to increase the unpredictability of the game:) Always work with water on your hands! Prior to beginning to grind, sprinkle some water on the grit.

Gordon Waite shows you the 3-phase motor and VFD (Variable Frequency Drive) that he is installing on the computer-controlled mirror grinding and polishing ma...

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 …

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Get the leading mirror glass grinding machine at Alibaba.com and redefine your productivity. The mirror glass grinding machine are highly innovative and affordable.

George Willis Ritchey built this mirror grinding machine at the Yerkes Observatory in Williams Bay, Wisconsin, in the late 1890s. Under the sponsorship of George Ellery Hale, the machine was used to grind a series of telescope mirrors starting with a 24-inch and then a 60-inch mirror for a telescope initially intended for the Yerkes Observatory ...

Large Thin Mirror Making by Mel Bartels. Grinding Machines. Mirror-o-matic. Tom Waineo's Desktop Grinding/Polishing Machine. Ken Lilja's Grinding Machine. Grinding Machine. Figuring. Figuring a Paraboidal mirror by …

September 26, 2006 The true test of the amateur astronomer is building their own telescope. Grinding and polishing your own mirrors is a long, arduous process. Instead of lapping the blank by hand,...

Leonardo mirror grinding machine (or lens grinding machine) is a masterpiece of mechanical engineering among his inventions. It has several gears in mesh at all times and also has several variable settings built into it. This mirror grinder was most likely designed by Leonardo while he was either investigating the different ways that light ...

The overarm is driven by an eccentric wheel which has a slot for adjusting the length of the drive arm offset. This determines the stroke length. The eccentric here is 3" in diameter and can work mirrors up to 12.5" in diameter. The new machine will have an 8" eccentric and can do up to 32" mirrors (in case I ever get that ambitious...).

I designed and built a grinding machine for mirrors up to 42 inches [1.1m] in diameter. By slipping on and off a couple of belts, the machine can quickly be reconfigured for spinning work or for stroking work. The machine can also …

A few years ago, I was thinking about hand grinding a mirror. I watched a YouTube video of John Dobson hand grinding a mirror. I don't really remember how big it was, but it was big. Maybe 14". Maybe larger. John was no youngster in this video and even though he is a master, he sure put a hellova lot of labor into that mirror.

MIRROR GRINDING MACHINE. I made my first mirror grinding and polishing machine over thirty years ago. It used the working principle of the machine illustrated at "A" Fig.3, Page 163, "Amateur Telescope Making" Book 1. A …

Plastic protractor inserted under a 6 inch mirror blank during a stress test, to illustrate what stress would look like - if there were any present. All blanks test like this, or they don't ship. Mirror Blank Sizes : We provide mirror blanks from …

JP4104199B2 - Molded mirror grinding machine - Google Patents Molded mirror grinding machine Download PDF Info Publication number ... grinding electrode mirror Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the ...

Mirror grinding machine Download PDF Info Publication number US2779137A. US2779137A US457429A US45742954A US2779137A US 2779137 A US2779137 A US 2779137A US 457429 A US457429 A US 457429A US 45742954 A US45742954 A US 45742954A US 2779137 A US2779137 A US 2779137A Authority US United States Prior art keywords frame …

A grinding machine relieves the labor, but is not necessary. A 24" is the largest you can comfortably do solo. ... Do this for the back side of the mirror also. As grinding proceeds, maintain the bevel. Scrounge a flat piece of glass 1/2 the …

George Willis Ritchey built this mirror grinding machine at the Yerkes Observatory in Williams Bay, Wisconsin, in the late 1890s. Under the sponsorship of George Ellery Hale, the machine was used to grind a series of telescope mirrors starting with a 24-inch and then a 60-inch mirror for a telescope initially intended for the Yerkes Observatory.

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.

Typically, the primary mirror is made of glass. Pyrex is commonly used for the primary mirror because of its thermal stability, but for small mirrors, plate glass will work fine too. Telescope mirrors are relatively thick. The concave shaped face is made by repeatedly rubbing the primary glass blank over another blank called the "tool".

On the picture below the machine is fine grinding an 8 inch mirror with an 71% tool (143 mm diameter) … plan of grinding machine – Project Case – Cruher and grinder … Toyo is continuing to expand the size of its ultra-large vertical grinding machines and plans to introduce the T …

The machine is shown grinding a 300 mm mirror.How to build a tachometer:

The numerical control mirror grinding machine is characterized in that the grinding head seat is installed on the polar radius translation bench through the polar angle rotating shaft to form a lower translation-upper rotation polar coordinate movement system. The numerical control mirror grinding machine is more stable in structure, high in ...

Telescope mirror grinding machine Mirror making and optical testing … The images below show the completed grinding machine in it's new garage in October 2001. GrindingPolishingMachine – LCAO. Telescope Making. Telescope Mirror Grinding and Polishing Machine. After I had made the 41-cm telescope mirror by hand I had decided that I needed a ...

Check out our mirror grinding selection for the very best in unique or custom, handmade pieces from our shops.

Supplier: J&S Machine, Inc. Description: Orbital polishing machine type LPC 500 mirror has been designed, like the other two smaller versions, for straight and bent tube mirror polishing up to maximum diameter 203 mm.; this unit is equipped with liquid polishing paste dispenser and with inverter device for polishing.

LPC 160 Mirror Orbital Belt Buffing Machine suitable for grinding and surface preparation prior to mirror polishing. Machine is delivered complete with Inverter device for an optimal mirror buffing. Garboli Tube Finishing Machines. * Finish straight or bent work pieces. * Up to o8.00" models available. * Dry and Wet versions available.

Advantages of CNC Glass Machining. CNC machining offers numerous advantages over conventional grinding and polishing for fabricating optical components including: 24 Hour Operation. CNC machines have the ability to work 24 hours a day, 365 days a year, only needing to be switched off for maintenance or repair. Complex Component Geometries.

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 …

Grinding a Mirror "For it is true that astronomy, from a popular standpoint, is handicapped by the inability of the average workman to own an expensive astronomical telescope. It is also true that if an amateur starts out to build a …

Mirror grinding machine. By Astroman, July 25, 2005 in DIY Astronomer. Share More sharing options... Followers 0. Recommended Posts. Astroman. Posted July 25, 2005. Astroman. Members; 6 3,173 Share; Posted July 25, 2005. I began work on the Mirror-O-Matic machine this weekend.

Ritchey Mirror Grinding Machine Gray rectangular frame made of wood and iron supporting a metal 60-inch diameter turntable which is driven by a series of pulleys. Overhead arms to hold grinding and polishing tools have to be put into place. Rectangular wood and iron gray frame painted, in parts, light blue.