Hi AllWe've been having some idle discussions about grinding mirrors here. In particular, we've 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 moment, but has anyone had experience buildi...
Stellafane, Home of the Springfield Telpe Makers Inc., Springfield, Vermont, USA, Amatuer Telpe Making. Reference Information for Grit, Pitch & Polish Page Contents. ... Mirror makers who use grinding machines tend to use fewer grits with bigger jumps in sizes; Starting Grit Size. Mirror Size Starting Grit; 6" and smaller: 80 grit: 8 ...
Cutting telpe mirror blanks out of a thick glass tabletop ... This is my home-built edge grinding machine for grinding down my home-cast mirror blanks. Click to see the whole project. This is a 12.5 inch diameter, 1.5 inch thick, light-weight honeycomb-back telpe mirror blank that I made myself. The blank only weighs 10 lbs, 4 oz.
I'm fascinated by those who can grind and figure their own mirrors for reflecting telpes. With the availability of kits to finish beautiful ATM dobs from …
WEBMaking a homemade mirror grinding machine - posted in ATM, Optics and DIY Forum: I want to make a motorized mirror grinder …
Telpe mirrors can be made in your kitchen, basement or garage with nothing more than the mirror blank and a second piece of glass (called the tool) to rub the mirror against with an abrasive grit and water slurry. ... Most professional and some amateurs do use machines, but these are simple, rotating spindles to supply the energy for ...
When grinding a telpe mirror, if the carbo is too thickly applied, the separate grains are crowded together and are not free to roll. Instead, they are dragged en masse around the work, scratching and scoring as they go, until most of them have been pushed over the sides of the tool, and the rest worn down to a size where much of their ...
The theory behind grinding is that you can remove glass as long as you use a material with a higher hardness. Telpe makers use silicon carbide powders (a.k.a. carborundum) for this task. It is cheap and comes in …
Hi, I build telpes. There are particular machines for grinding mirrors, most likely your router won't do the job. Many also hand grind their mirrors although that is most definitely a lot of work but you'll get excellent results. I wouldn't try a 24" first unless you've had some practice. Here's some links to get you going...
The time it takes to grind and polish a concave mirror using a grinding/polishing machine can vary depending on the size and complexity of the mirror and the precision required. However, it is not uncommon for the process to take several days or even weeks to achieve a high-quality finish. ... Telpe mirror polishing …
At Antares Optics, we use advanced computer-controlled grinding and polishing machines to achieve surface accuracies measured in millionths of an inch – far exceeding the precision required for flawless optical surfaces. ... If you need help selecting the proper secondary mirror for your telpe, our knowledgeable technical staff is happy ...
Most amateur telpe makers (ATMs) build a Newtonian telpe, a design named for its inventor, Sir Isaac Newton. The heart of the Newtonian telpe is its primary mirror. Most Newtonian primary mirrors have either a spherical or a parabolic shaped concave face. Unlike most other mirrors in your home, the mirror coating of a
Page 1 of 5 - Making a Mirror grinding & Polishing machine - posted in ATM, Optics and DIY Forum: Hello, I am on the half of the way to make a mirror grinding machine inspired by original M-O-M design. I made the pulley arrangement such a way that, both the turn table & eccentric spins at 50 RPM fixed. I wont go for making mirror …
In this case, since the mirror was oversize (8.25″) and is a "training" mirror anyways, I forged ahead. The first grit I was supplied with was 46 so I dutifully began hogging out my curve using "chord" strokes, with the center of the mirror being ground against a short section towards the edge of the mirror.
Grinding and Polishing the Mirror. Once you've appropriately set up your workspace, one of the most critical steps in DIY telpe mirror crafting is grinding and polishing the mirror. This process involves removing material from the mirror's surface to achieve the desired curvature, and subsequently achieving a smooth finish for the ...
Devices like these are still used nowadays by amateur telpe/optical instrument makers around the world. The version they use is a tabletop sized mechanism, but is essential of the same design as Leonardo da Vinci mirror grinding kit, the only difference being the use of an electric motor instead of the hand crank.
Save money and time by purchasing a telpe mirror kit. This kit includes an 8 inch telpe mirror blank, all the silicon carbide grits, white aluminum oxide powders, gugolz pitch, and cerium oxide polish you will need to grind and polish an 8 inch telpe mirror all bundled in one spot. This will get you on a great start to building your own telpe.
Mirror-o-Matic and fixed position tool grinding - posted in ATM, Optics and DIY Forum: I plan on using a Mirror-o-Matic type grinding machine soon. The fixed position technique Mark Cowan uses …
Spin polishing 16" mirror. Here you can see a 16" mirror being polished. Contrary to the 12" example in the previous video, very little CeO and low turntable speed is being used. The reason for this is that even using very fine optical grade CeO, as I do, a thick mix of polishing compound will generate a rough surface, as can be seen on this photograph of …
CNC telpe mirror grinder. – CNCzone-The Largest … It has a 12 inch diameter mirror. While the telpe looks expensive because of its size … few by hand, not to say I know anything about machine grinding.
Save money and time by purchasing a telpe mirror kit. This kit includes an 10 inch telpe mirror blank, all the silicon carbide grits, white aluminum oxide powders, gugolz pitch, and cerium oxide polish you will need to grind and polish an 10 inch telpe mirror all bundled in one spot. This will get you on a great start to building your own …
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Page 1 of 2 - Grinding your own mirror - How is it possible to get accuracy in the nm? - posted in ATM, Optics and DIY Forum: So I have read forum questions & answers on topics such as whether it is possible to use a 3D printer to design and print out a telpe mirror, or design an array of paraboloids this way for a segmented design, and the …
Some members of this group have made telpes and machines. Lütfü Çakmak is in Izmir. He has made reflectors and refractors. Uğur İkizler is a telpe …
I am on the half of the way to make a mirror grinding machine inspired by original M-O-M design. I made the pulley arrangement such a way that, both the turn …
Save money and time by purchasing a telpe mirror kit. This kit includes an 8 inch telpe mirror blank, all the silicon carbide grits, white aluminum oxide powders, gugolz pitch, and cerium oxide polish …
I have completed DIY projects before, but the grinding of a primary mirror seemed beyond my need to satisfactorily say that I could build my own telpe. There is so much more to it than just the primary mirror – the tube, the many proper measurements, the mount wood cutting, the secondary mirror's spider, the swivel construction, to name ...
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 paired with a device called a grinding tool, usually...
