Injection moulding machine (closing stroke protection) Machine for concrete bricks ; Steelworks; Injection moulding machine (drive system) Injection moulding machine (vertical) Machining a large telpe mirror

this latest installment, we show the preparation for the glass casting. At the end, we show our home-made way to grind the ed...

PZX 5-Axis Prism Grinding Machine. The PZX prism grinding machine is the latest solution for companies looking to enhance their prism manufacturing capabilities. Machine prisms up to 6″ thick with a maximum diameter of 10″ for the longest diagonal.

Homemade Telpe Lens Grinding Machine April 25, 2014 by gustaf17 Leave a comment Check out this descriptive page listing a few devices created by amateur telpe enthusiasts that developed their own methods and tools for creating lenses.

Grinding with Washers Grinding Large Thin Mirrors Part I Grinding,Polishing and Figuring Large Thin Mirrors - Part 2 - Polishing Astronomy, telpe making,mirror grinding and testing 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 ...

Mirror Making Machine – Welcome to the Fansler's. Bugger this for a Lark – A machine has got to be easier! I made my first telpe mirror, by hand in … could not afford the material to build a mirror grinding machine …

A 6" or 8" mirror should take about 40 to 80 hours of effort. While this is a non-trivial amount of time, the mirror can be completed in a few months, and certainly within a year. Most people work one to three hours a day on their mirror about one or two times a week. Homemade Mirrors are of Inferior Optical Quality.

My Mirror Grinding Machine. For a long time I've wanted to build a machine for grinding telpe mirrors. Dennis Rech's M-o-M designs finally inspired me to just get up and do it. Over the years, I'd been collecting motors, gear boxes, pulleys, etc. …

Figure 2: Lens-grinding machine of Christiaan Huygens (From his 'Opuscula Posthuma', published posthumously by Janssonio Waesbergios, Amsterdam, 1728 ) What made it very difficult to produce usable lenses, as the Huygens brothers soon found, was that the whole art of lens grinding was surrounded by secrecy.

The I.A.U. named asteroid 17823 Bartels discovered 1998 by J.M.Roe in recognition for my contributions to amateur astronomy. Making is the Key to Knowing. A telpe mirror is arguably the most accurate surface made by human or machine. Amazingly you can grind a mirror by hand and make a telpe with simple hand tools.

The Tools: Grinding & Polishing. You will need two tools: A hard tool for rough and fine grinding, and a soft tool, or pitch lap, for polishing and figuring. Traditionally, the pitch lap was made on top of the grinding tool. We recommend using plaster disks for tool substrates, and that you use separate disks for these two tools.

A look at a 15" Telpe Mirror, with Ronchi history. The fabrication of this 15" F4.5 primary telpe mirror began with a planoplano blank. I used my own diamond grinding equipment to generate the rough curve here. After the generation, I poured a steel grinding tool and used #40 silicon carbide abrasive to get the mirror close to the ...

Making a telpe mirror. To start, a new mirror blank is "sanded" down to create a precise parabolic curve in a process called grinding. To do that, the blank is …

Document sans nom. A history of polishing machines. As often in sciences and technology, Leonardo da Vinci was a pioneer, creating machines for the production of optical devices. Indeed, between 1513 and 1517, he imagined machines to grind and polish telpe mirrors, which, at the time, were made of bronze.

Bill W, Ian K, David G, and I (Guy B) modified an existing quasi-Mirror-O-Matic machine by changing pulley ratios and changing it into sort of a Draper machi...

Very old mirror/lens grinding machine. This machine can grind and polish using different stroke patterns, i.e. w-stroke, short strokes, long strokes, etc. C...

- Myron Emerson's Amateur Telpe Mirror Making - GAP 47's machines summary - David Harbour's Understanding Foucault - Albert Highne's Portable Newtonian Telpes - Neale E. Howard's Standard Handbook for Telpe Making - Albert G. Ingall's Amateur Telpe Making, Volumes 1-3 - H. Dennis Taylor's The Adjustment and Testing of Telpe ...

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. One more question ...will 1 1/2 shaft size pillow block bearings work good for a homemade EQ mount? Thank you, John

Orion Motor Tech 850W Electric Power Drywall Sander with Vacuum Dust Collector, Swivel Head Extendable Variable 5-Speed LED High Visibility Wall Grinding Machine and 12 Sanding Discs Drywall Sander, Ginour 6A 7 Variable Speed 1000-1800RPM Wall Sander With Vacuum Attachment, LED Light, Extendable Handle, Long Dust Hose, Storage Bag, 12 Sanding Discs

Amateur Telpe Making Main Page. "For it is true that astronomy, from a popular standpoint, is handicapped by the inability of the average workman to own an expensive astronomical telpe. It is also true that if an amateur starts out to build a telpe just for fun he will find, before his labors are over, that he has become seriously ...

Rough grinding is complete for the 12.5 inch honeycomb-back telpe mirror blank. The rough grinding went pretty quickly and painlessly this time. I only have maybe 12 hours of actual work in the mirror so far. It's hard to believe, but the rough grinding has removed over a pound of glass. The mirror now weighs in at only only 8 pounds 15 ounces.

The Machines: Documentation: Information for ATMs Zip archive of Mirror-o-Matic Yahoo Groups (2000-2019) 307 Contact Dennis ...

Page 1 of 2 - Making my own fixed post mirror grinding/polishing machine - posted in ATM, Optics and DIY Forum: Hey guys. Im thinking of making my own fixed post mirror grinding/polishing and curve generating machine. Ive got loads of questions regarding the design so Ill just start firing away Do I need an eccentric moving tool to be able to polish a …

I eventually decided I needed to build a dedicated edge grinding machine. This is how I did it. I started the build by making a sturdy frame for the unit out of 2x4 lumber and 3/4 inch thick plywood. Wheels were added to the bottom of the unit so it can be wheeled outside. The grinding operation will be messy, so it will need to be done outside.

Treas. and Pres. of the Amateur Telpe Makers of Long Beach, 319 Hermosa Ave., Long Beach, Calif. "IN the March issue of Scientific American . you mentioned your hope of hearing from those who are grinding 20" Pyrex mirrors. Here is our bid for membership in the Twenty-Inch Club. "We received our solid disk on January 9.

To do these operations I built a grinding machine which would be used throughout the project. My grinding machine, shown in these pictures, was based on Dilworth's grinding machine seen in the Nov-Dec 1977 issue of S&T: The grinding machine has three spindles. The right spindle is the one on which the mirror is mounted.

Grinding Machine for Large Telpe Mirrors. 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 work smaller mirrors if the drip pan is moved to the fast shaft on ...

The well used tile tool at right illustrates a couple of maintenance issues. 1. Tiles Grind Away: You may grind through your tiles at the edge, especially if you are making a very fast (low focal ratio) mirror.In that case, you can epoxy a second layer of tiles on over the first.

just a quick vid of my home made mirror grinding machine

May 2, 2018 - Explore Gene Cross's board "Telpes for Amateur Astronomers", followed by 252 people on Pinterest. See more ideas about telpes, astronomer, telpe.

After grinding, the lens was polished, sometimes using the same lap that had been used to shape it. That required preparing the lap surface to remove roughness. In some cases, it was done by overlaying the surface of the lap with a specially prepared paper. In other cases, a method still used by amateurs to polish telpe mirrors was used.

Mar 8, 2021 - Grinding machine for mirrors up to 42 inches [1.1m] in diameter. Can be configured for spin or stroke work.