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How I built an edge grinder for telpe mirror blanks. ... I borrowed a few ideas from the MirrorOMatic mirror grinding machine, particularly how to mount the turntable on top of the pulley. Anyone building machinery for coldworking glass should have a look at the MOM web site and plans. ... [Mike''s telpe workshop] [Mike''s homebuilt ...
Please see the Buy Telpe Mirror Blanks page for low prices on plate glass mirror blanks. If you''d like to buy a complete mirror grinding KIT, with all abrasives and grinding tool included, please see the Buy Telpe Mirror Kits. website for the lowest prices on plate glass telpe mirror grinding kits.
Following in the footsteps of Greg Rohde (Superior Optical Supply), new owners Tim and Chris Anderson (Five Star Optical Supply) will continue to provide high quality, quartz mirror blanks to the amateur astronomy market. Quartz is a very pure glass with an extremely high melting point.
There are many reasons for grinding your own mirror. Either you want a unusual size, or focal length, or to satisfy your curiosity, or to have the "pride of achievement" by fabricating something as precise as a telpe mirror.
Grinding and polishing a n 18" quartz substrate. Quartz is a wonderful material for making telpe mirrors. The thermal performance of quartz offer .
Grinding Machine for Large Telpe Mirrors. I designed and built a grinding machine for mirrors up to 42 inches [] 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 ...
Stone tools go back million years. Pounding, scraping, knapping, grinding combined with fire, heat, melting leads us today to grinding telpe mirrors from glass. Making a telpe mirror is one of the most satisfying and sublime joys you will experience. It''s also arguably the most accurate surface made by man or machine.
Since I''ve been casting my own telpe mirror blanks for several years now. I finally decided it was time to build a machine to help me grind the edges of the blanks true and round. This is my homebuilt edge grinding machine for grinding down my homecast mirror blanks. Click to see the whole project.
Nov 01, 2011· Hi AllWeve been having some idle discussions about grinding mirrors here. In particular, weve been discussing building a fixed post mirror grinding turntable for cutting mirrors up to about a 24inch diameter to spherical. Its only a pipe dream at the .
Mirror Grinding Machine. telpe mirror grinding machine based on Dennis Rech''s MoM 20. My Mirror Grinding a long time I''ve wanted to build a machine for grinding telpe . » More detailed So you really want to build a Telpe Mirror.. So you really want to build a Telpe May. . Grinding/polishing machines work by rotating the bottom piece (mirror or ...
The fabrication of this 15" 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 target focal length.
Build your own telpe part 1: The mirror. by Thomas | posted in: Astronomy, DIY | 6 ... tend to have a higher surface quality than the mirrors polished by industrial machines. Building a reflector telpe can be decomposed in 2 steps: make the mirror and build the tube/mount. ... to chemical grinding (cerium oxide). The strokes stay the ...
Dec 06, 2009· The movie shows the Zeiss machine in all its phases, putting together notes, drawings and films that make up the story: from initial idea to the project, manufacturing of machine parts to the ...
(3) A homemade telpe mirror can be made with more accuracy and smoothness than the massproduced, commercial mirrors available today. Unfortunately, the cost of mirror grinding kits and pyrex blanks has increased significantly in recent years to the point where any savings from making a mirror versus buying one are minimal at best.
Dec 16, 2014· Gordon started with a 2" thick telpe mirror that weighed about 70 pounds. By thinning the blank, he''s lightened the mirror by about 20 pounds! This video explains how he ground off the excess ...
Throughout the grinding and final lapping stages, the objective has been to reduce pits and scratches to the smallest possible size. However, no amount of grinding can produce a surface smooth enough or sufficiently transparent to meet the needs of a firstclass telpe objective. Different techniques are .
Stellafane, Home of the Springfield Telpe Makers Inc., Springfield, Vermont, USA, Amatuer Telpe Making. Amateur Telpe Making Main Page. ... mirror grinding techniques are very similar to those written up by Porter and Ingalls in the 20´s and 30´s. Many amateur astronomers still choose to fabricate their own instruments, for the ...
This is a grinding machine for the amateur telpe mirror maker who is interested in a grinding and polishing machine. It is what is called a "fixed post machine". If you are not familiar with it check out "Gordon Waite" on Youtube. He has a number of Youtube videos showing this type of machine .
How to Make Your Own Telpe Mirror: [Fig 1] This is a large piece of glass a woman off Craigslist gave me. It was 40"x40" and " thick. Its what I decided to use to make the mirror. Cutting it into smaller sections can be difficult but scoring it with a glass cutter and tapping t...
(3) A homemade telpe mirror can be made with more accuracy and smoothness than the massproduced, commercial mirrors available today. Unfortunately, the cost of mirror grinding kits and pyrex blanks has increased significantly in recent years to the point where any savings from making a mirror versus buying one are minimal at best.
Rough Grinding on the FixedPost Mirror Grinding Machine Hogging the Curve on a 20" f/ Quartz Telpe Mirror Astronomy magazine names Waite Research''s Renegade telpe a top .
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 telpe mirrors starting with a 24inch and then a 60inch mirror for a telpe initially intended for the Yerkes Observatory.
There are many reasons for grinding your own mirror. Either you want a unusual size, or focal length, or to satisfy your curiosity, or to have the "pride of achievement" by fabricating something as precise as a telpe mirror.
Sep 01, 2018· Modern optical telpe use mirrors and very few lenses. Unlike bathroom mirrors, where the shiny layer is sealed in to the back of the glass, telpes use socalled "first surface" mirrors ...
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