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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...
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. If the mirror is expanded to the size of a football field, then the mirror''s surface will be smooth to 1/1000 inch or 1/30 millimeter!
May 30, 2014· This is how you make a telpe mirror out of a hunk of glass: Use a sand mixture and another piece of glass to grind away the middle of a concave shape. Repeat with finer and finer grit sand. Dave Barosso demonstrates the technique, but to do it yourself, try to visit one of the Telpe Makers Workshop''s classes on Friday nights in Oakland.
Jul 08, 2013· Homemade 10inch Mirror Grinding Machine. Sorry for blurred image..... Homemade 10inch Mirror Grinding Machine. ... DIY Telpe Mirror grinding machine Sushil Dolas. Loading... Unsubscribe from ...
Nov 05, 2018· Page 1 of 4 Making a telpe mirror with resin posted in ATM, Optics and DIY Forum: Hi there I am new and i want make a new 12 primary mirror for a dob i was wondering if it can be made from resin instead of glass. Heres what came to my mind We can take some kind of resin epoxy or other and pour it into a tub or something and spin it at a constant rate with servos and creating .
Making a tachometer for a grinding / polishing machine for telpe mirrors . Submitted by florin on Sun, 18:41 ... When making a telpe mirror on the machine, two parameters are important: the rotation speed of the mirror, and the rotation speed of the overarm eccentric. ... Making a tachometer for a grinding / polishing machine ...
Sep 26, 2006· Grinding and polishing your own mirrors is a long, arduous process. Instead of lapping the blank by hand, Laurie Hall built this mirror grinding machine from scratch.
MirrorOMatic grinding machine. When I decided in 2009 after a tenyear break to get into mirror making again, it quickly became clear to me that I would need to construct machine, as hand grinding big mirrors is not something very beneficial for the hands of a musician.
Jun 06, 2009· Very old mirror/lens grinding machine. This machine can grind and polish using different stroke patterns, wstroke, short strokes, long strokes, etc. Currently this machine can only operate a ...
A course diamond grinding drum is installed on the grinder. It will be used to take off the rough edges, and make blanks truly round. Then a switch to a finer grinding drum will clean up the edge. The edge grinder is done! Here I am doing a dry run to make sure everything works. A diameter wood disk has been installed on the grinder.
Another surprising advantage is that hand made optics (if guidelines are followed) 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.
Jan 26, 2012· Want To Make A Giant Telpe Mirror? ... After the mirror is cast, it moves to the Large Polishing Machine, where the mirror''s shape is refined and perfected — .
8 Jun 2017 Explore neilaubrey''s board "Telpe Mirror Making" on Pinterest. See more ideas about Telpe, Diy telpe and Astronomy.
Jun 07, 2018· Page 1 of 2 Making a tin mirror. Grinding without tool. posted in ATM, Optics and DIY Forum: Im making a tin parabolic mirror which is 8 inches. Telpes used to be made of mostly copper and some tin but i wanted to see what would happen with just tin. I have no tool to grind it so i was wondering if it would be possible to grind without a tool into a hopefully almost perfect parabolic ...
As we explain in our mirror making demonstrations at the Stellafane Convention, the basic mirror making process involves grinding the mirror blank into a sphere with desired radius of curvature for the target focal length. We then polish this sphere smooth, and then slightly alter it into a parabolic curve.
Mar 06, 2006· 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
DIY Mirror Grinding and Telpe Making. Bill''s Homemade Telpe Making Project This web page provides an overview of my large homemade telpe making project. I read several telpe and mirror making books and visited many amateur telpe making or "ATM" websites to learn how to build a inch homemade telpe of this size. These ...
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.
This is why you don''t want to make mirrors to be worked on machines too thin. For 16" to 18" mirrors, " thick is the thinness I would recommend. There are several ways to support the grinding and polishing machine turntable, but first make .
A To make a telpe mirror from a flat disk (of glass), the flat surface has to be changed to a spherical / parabolic surface, because a flat surface can only reflect light in the same opposing angle as it comes to the surface, but for a enlarged view to be seen, the light has to come to a small focal point, at our eye or camera lens, therefore the surface is changed by grinding and ...
Amateur Telpe Making Main Page. Russell Porter ... Much is also unchanged 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 pride of accomplishment, the gaining of knowledge and the insurance of ...
Sep 23, 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 seconds to 2 minutes.
Oct 15, 2012· 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 mirror spherical?
Aug 27, 2012· The natural mirror grinding process will create a sphere. The first part of making a mirror is to grind and polish to a sphere of the required focal length. Then the mirror is parabolised, by using special polishing strokes, that changes the figure from sphere to paraboloid.
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