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Construction of a primary mirror requires, as a final step, the aluminization of the mirror's surface. This critical step is not a home DIY task. You would need to find an …
The long screw-eye passes through an embedded nut in the top wooden plate, and presses on the assembly below. The springs pull up against the screw-eye. Turning the screw-eye raises and lowers the grinder height in minute increments. A flap of Velcro holds down the trigger on the grinder so it is always on.
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 …
Hello all, I'm fascinated by those who can grind and figure their own mirrors for reflecting telescopes. With the availability of kits to finish beautiful ATM dobs from companies like dobstuff, the lure of building one's own scope to high tolerances an…
For this project (my first time ever grinding a mirror) I ordered an 8″ Black Vitrified Ceramic (BVC) blank without a pregenerated curve from ASM Products in Ste-Basile PQ. Ordering from Canada is always cheaper once you factor in all the taxes – all told the kit cost about $185. It includes Aluminum Oxide grits in 46, 80, 100, 240, 500 ...
The Chordal Stroke. USE: Used at the beginning of rough grinding to initially "hog out" a lot of glass and generate the initial curve in the glass. MIRROR POSITION: Mirror on Top, Tool on Bottom ABRASIVE: Your …
Anyway, it's amazing the precision you can achieve simply with some glass, grit, pine pitch and a lot of work. I've heard that this is literally the highest …
Mirror and Tool. We start with a mirror blank. This is a round piece of Pyrex glass with one flat face (the bottom) and one face slightly shaped, but very rough. ... Grinding and Polishing. ... Here you see an image of a telescope mirror seen through the Foucault knife edge tester. The green and dark shadows reveal the slope of the mirror at ...
telescope mirror grinding machine based on Dennis Rech's M-o-M 20 . My Mirror Grinding Machine. ... The only special tools that I used were a drill press and a router. All in all, I spent about $100 on the plywood, …
Telephone: +44 (0) 1268 728077. Stock Specification. All our Mirror Kits contain a Pilkington Float Glass mirror blank and Grinding Tool. These arefinished with fine ground edges. 180 grade first stage ginding powder. …
The rotating table set up for a 6" mirror. The central pin is a 1/4x20 bolt. Two of the furniture glides are shown. For a 12" mirror, I just used smaller blocks. I use a rotating table for fine grinding and polishing. Rubber feet …
Here's a step-by-step guide to making your own telescope mirror blanks. First, you'll need to gather some supplies. You'll need a sheet of float glass, a glass cutter, a straight edge, and a glass grinding tool. You can find all of these supplies at your local hardware store. Next, use your straight edge and glass cutter to cut the float ...
Construction of a primary mirror requires, as a final step, the aluminization of the mirror's surface. This critical step is not a home DIY task. You would need to find an industrial optics company willing to perform the aluminization for you. You can spend weeks of your life grinding the mirror, then be lost because you cannot find an ...
Mirror-O-Matic grinding machine. When I decided in 2009 after a ten-year 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 …
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 …
The long screw-eye passes through an embedded nut in the top wooden plate, and presses on the assembly below. The springs pull up against the screw-eye. Turning the screw-eye raises and lowers the grinder height in …
Here is a stack of my home-made 8 and 10 inch mirror blanks. The second from the bottom is the one above. I can use the thinner blank below it as the grinding tool. UPDATE I have started rough grinding one of my home-made 10in glass blanks. Here is an action shot of me, pushin' glass. I am aiming for an f/5 mirror.
Start with one of our telescope mirror kits. Each kit comes with a telescope mirror blank and all the abrasives (silicon carbide grits and white aluminum oxide powders), cerium oxide polish and pitch to grind and …
A look at a 15" Telescope Mirror, with Ronchi history. The fabrication of this 15" F4.5 primary telescope mirror began with a planoplano blank. I used my own diamond …
FORCE. When grinding thin mirror blanks, be conscious of downward pressure, which if excessive, may bend the mirror blank momentarily out of shape. While this is not a problem during rough grinding (as the amount of flex is exceedingly small) the effect becomes important as you reach the later stages of making your telescope mirror.
By Nathan Hurst. This is how you make a telescope 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 Telescope Makers Workshop 's classes on ...
The mirror ended up with a very smooth, zone free, nearly spherical figure ready for final figuring. Figure 1: Polishing pads applied to a 9 inch grinding tool. Another local ATM has also tried the polishing …