Grinding mirror using CNC router - ATM, Optics and DIY ...
1/4 λ is on the order of 0.000006in. My Son who is a qualified milspec machinist doesn't get closer than 0.0001in. I suppose you could rough grind the tool and initial mirror shape but this will only work if you CNC router is 3D.
Grinding mirror World | BGMI | - YouTube
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5 Common Glass Edge Types - Swift Glass
Available with straight or curved bevels, chamfered edges are most often seen on frameless mirrors, such as those on medicine cabinets. Pencil Grind Pencil grinding, achieved through the use of a diamond-embedded grinding wheel, is used to create a slightly rounded edge and allows for a frosty, satin, or matte glass finish.
Telpe Mirror Grinding Machine | Crusher Mills, Cone ...
Grinding Machines Mirror-o-matic Tom Waineo's Desktop Grinding/Polishing Machine Ken Lilja's Grinding Machine. TELPE MAKING – David Ratledge's Virtual Home. A telpe with a Schmidt corrector is a Schmidt … Secondary Mirror. … Even with a grinding machine this is laborious to say the least.
Grinding an 8″ F/10 Telpe Mirror – gordtulloch
Grinding an 8″ F/10 Telpe Mirror. 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.
How I make Telpe Mirror Blanks - mdpub
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.
Joy of Mirror Making: Fine Grinding - BBAstroDesigns
For large thin mirrors, say 12 inches [30cm] or greater and 1.5 inches [4cm] or thinner, the mirror back must be ground flat, or at least regular in shape before beginning fine grinding the mirror's face. Cast a tool specifically for the mirror's back, and grind with 220 grit, inspecting for low unground spots. Grind until they disappear.
Thin Telpe Mirror Grinding Advice
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 telpe mirror.
3mirrors ALUMINUM Tungsten Electrode Sharpener Grinder TIG ...
3mirrors ALUMINUM Tungsten Electrode Sharpener Grinder TIG Welding Rotary Tool w/Flat Grinding Block, Cut-Off Slot, Multi-Angle & Offsets, 4 Screw Holes, 5 Double Sided Grind Wheels, 2 CNC Mandrels - - Amazon
Grinding binoscope 400's mirrors - YouTube
Me starting my binoscope 400mm making. That is the grinding the backs of primary mirrors in Juny 2003 to planing it. Sorry for the small movie's problems at ...
Explore how telpe mirrors are made | Astronomy
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 …
How to hold convex mirror blank for grinding? - ATM ...
Page 1 of 2 - How to hold convex mirror blank for grinding? - posted in ATM, Optics and DIY Forum: I obtained a mirror blank that had been previously used for grinding another mirror, so one side is convex and one side is flat. Rather than hogging out the convex side, I plan to grind on the flat side. But, Im trying to figure out the best way to hold the blank …
Stellafane ATM Main Page
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 …
Nonuniform Rational Basis Spline Interpolation for Off ...
Large-diameter aspheric mirrors made of hard and brittle materials suffer from low efficiency in the grinding stage, making them difficult to process. In this study, a nonuniform rational basis spline (NURBS) interpolation method is proposed and developed based on the grinding wheel path planning. The characteristic parameters of NURBS machining program …
Stellafane ATM: Fine Grinding
in the 2001-02 Stellafane Mirror Class. Fine grinding refines the basic shape you have ground into the surface of the glass with rough grinding. The sequence of ever finer grits that you use smoothes the rough surface that was made in rough grinding, and prepares you for polishing. You are also refining the shape of the surface to be a section ...
Stellafane ATM: Grits, Polish & Pitch
Mel Bartels, a well respected west coast amateur, recommends on his Large, Thin Mirror Grinding web page starting with something between 30 and 60 grit, and then 120, 220, 500 (=25 micron) and finishing with 9 micron. This is just a 5 grit sequence, as opposed to 8 to 10 for the more traditional sequences usually recommended for novices.
A high quality surface finish grinding process to produce ...
mirrors. Keywords: grinding, finishing, x-ray mirror 1. Introduction X-ray mirrors, reflective optical elements that can reflect and focus x-ray (beams) of short wavelengths, are applied to various types of analyzers, including synchrotron radiation facilities [1], portable x-ray elemental analyzers [2], and astronomical x-ray telpes [3].
Tips for Using Mirrors in Copper Foiled Stained Glass
Grinding Mirrors. Silver backing chips very easily so use the finest grit grinder head you can get – super fine if possible. Alternatively, use an old grinder head which is dulled already. If you use a coarse grit it will chip into the mirror backing; Keep the backing uppermost to stop any scratching on the grinder bed
Chitando takes rural grinding mills out of business ...
The Mirror toured Gutu Central and Gutu North constituencies two weeks ago and realised that grinding mills belonging to the two are strewn all over the townships. Chitando was the first to introduce the Chinese made grinding mills in 2020 and Simbanegavi who will face at least three candidates in the Zanu PF primary elections including a ...
Electrical Discharge Dressing (EDD) of Metal Bonded ...
Metal bonded diamond grinding wheels are very important for precision grinding operations of hard and brittle materials especially like ceramics or cemented carbides. But the trueing and dressing problem has affected its wide use. In this paper, a new EDD (Electrical discharge dressing) device was developed for the dressing of metal bonded diamond arc grinding …
Telpe Mirror Blanks / TelpeMirrorBlanks ...
There are several advantages to using thin plate glass mirror blanks for grinding your telpe mirror: * Thin mirror blanks are less expensive, allowing more people to afford the hobby of grinding their own telpe mirror. * Choosing a thin mirror blank gets you more aperture for your dollar. * Telpe mirrors made from thin mirror blanks ...
Mirror grinding - scope making
Add the usual half teaspoon of grit, sprinkle with water and grind for a couple of minutes, rotating tool and mirror often. Rinse the mirror and inspect the grid lines. If the grid is worn out evenly, you are doing fine. If you grinded with TOT, the …
Grinding Telpe Mirrors, Then and Now | Consortium for ...
The master craftsman, Roger Angel, who has been making telpe mirrors for 30 years, or its the technicians arranging—arranging not simply throwing into the mold—chunks of glass (pictured above), or those grinding and polishing the mirror, success depends on just knowing when you've done it right. Or, as Angel says, "Not only is it devilishly hard to grind …
Grinding in Mirror World - YouTube
Song credit:https://youtu.be/AlXfbVpDUdoSong: Unknown Brain - MATAFAKA (feat. Marvin Divine) [NCS Release] Music provided by NoCopyrightSounds. Watch: https:...
Joy of Mirror Making: Introduction - BBAstroDesigns
Grinding a 6 inch [15cm] mirror to F/2.8 using a ring tool. Mirror Making Zen. Do one thing at a time. Mirror making is a process: 1. Get blank, grit, pitch 2. Roughly grind a curve in the mirror face 3. Refine the curve with diminishing grit sizes 4. Polish the mirror face 5. …
Grind and Polish a Dobsonian/Newtonian Telpe Mirror ...
The process for grinding telpe mirrors at home actually doesn't look too much different than when Isaac Newton first developed it, and he didn't have any power tools. John Dobson was a monk and did much of his work in secret from his brotherhood.
Mirror Grinding Machine
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. …
Grinding Machine for Large Telpe Mirrors
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 ...
Grinding - Amateur Telpe Making - India
Fine grinding and smoothing Once the rough grinding has been completed the mirror, tool, work plate etc. should be thoroughly scrubbed and cleaned using soap solution and an old tooth brush for example. If possible, the cleats should be replaced with new ones; the work post should be cleared, the newspapers and used cloth pieces thrown away.
Stellafane ATM:Mirror Making Myths
With the Mirror on top, the tool on the bottom, and coarse grit in between, we start grinding with the mirror overhanging the tool. We rub the center of mirror against the edge of the tool, and this wears a depression in the center of the mirror (the edge of the tool wears down also, so that the tool becomes convex (a "hill" in the center) and ...
