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May 01, 2011· Grinding serves a very specific purpose. There is no alternative to grinding that accomplishes what it does, and grinding also doesn't solve the same set of problems that other solutions address. Games that implement grinding to solve problems it doesn't solve misuse it, but that doesn't make the mechanic bad.
Fine Grinding The goals of fine grinding are to prepare the curved mirror face so that it is ready for polishing and figuring and make any adjustments of the focal length. Previously in rough grinding we deepened the center of the mirror's face either by grinding with coarse grit and a tool, slumping in a kiln over a mold, or purchasing the .
Amazingly, the rough grinding has removed over a pound of glass. The mirror now weighs in at only only 8 pounds 15 ounces. Now the fine grinding can begin to clean up the rough surface left by the rough grinding. Photo #3 shows the sequence of abrasive grits that must be used to get from rough grinding, through fine grinding, to polishing.
Joy of Mirror Making: Rough Grinding - BBAstroDesigns. The Joy of Mirror Making . The grinding wheel on a boom approach is difficult . The center will deepen during the first stage of fine grinding as contact is . Get Price And Support Online; Diamond grinding cup wheel - Wikipedia. A diamond grinding cup wheel is a metal-bonded diamond tool ...
A New Generation of JOY In the nearly ninety years since Irma Rom self-published the first Joy of Cooking, it has become the kitchen bible, with more than 20 million copies in print.This new edition of Joy has been thoroughly revised and expanded by Irma's great-grandson John Becker and his wife, Megan Scott.They developed more than six hundred new recipes for this edition, tested and ...
JoeAstro Mirror Grinding; Joy of Mirror Making Rough Grinding by Mel; Joy of Mirror Making Fine Grinding by Mel; Large Thin Mirror Grinding; Making a 110mm f/7 by Arjan; Making a 150mm f/4 by Arjan; Making a 250mm f/6.4 by Arjan; Mirror Grinding by P.N.
A ring tool of half the diameter of the mirror used on top of the mirror's flat face with the coarsest grit will rapidly grind a spherical curve into the mirror. 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.
mirror grinding machine design. mirror grinding machine design Mirror Grinding Machine - ATM, Optics and DIY Forum,- mirror grinding machine design,This image shows the 3D model of the overarm assembly I added to my small spin-post grinding machine (I'm building a bigger one now based on the same basic overarm design) In the one shown, the overarm is,..
The Joy of Mirror Making, Here is a 25 inch mirror on top of the fine grinding tool with pads, Pitch is used today to polish amateur telpe mirrors, .... know more Telpe Making Supplies
「Joy of Mirror Making: Rough Grinding BBAstroDesigns」 The center will deepen during the first stage of fine grinding as contact is achieved across the mirror face and fine grinding tool. On larger mirrors, the ring tool may leave the zones part way to the edge a little underground.
Oct 19, 2014· This is the fine grinding process. Make a PARABOLIC Mirror the cheap way PARABOLOID DIY REFLECTOR DIRECT TV hack Solar Reflective Film - Duration: 10:09. GREENPOWERSCIENCE 893,191 views
Oct 30, 2007· 'm fine grinding my 12" plate glass mirror blank with the M-O-M by Dennis Rech. It's an automatic mirror making machine that takes the "caveman" work out of mirror grinding.
The Joy of Mirror Making Mel Bartels ... Here is a 25 inch mirror on top of the fine grinding tool with pads applied. And here is the result after 5 hrs of machine polishing starting from a 20 micron aluminum oxide grind. Note that the edge is not as reflective. Materials Needed.
Joy of Mirror Making: Rough Grinding. Edward Telpe Making. Imagenes De Telpios Instrumentos Espacio Cosmos Estrella De Neutrones Sistema Solar Proyectos De La Feria De Ciencias Prismáticos Espejo. Grinding my first 6" f/8 Telpe Mirror. This video shows a few initial stages of making a primary mirror for a 6" f/8 telpe. I'm a ...
Rough grinding. This step is about making one side of the glass concave. It will give your mirror its overall focal ratio. If you make the centre deep, you will end up with a fast telpe (e.g. F/D = 4) well suited for deep sky observations. On the opposite, a shallow mirror (e.g. F/D = 8) will be performing very well on planets and the moon.
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. Yet, the larger the mirror you make the more money you can save when compared to buying a mirror .
I love recipes, family histories, writing about (predominantly) experience and food. Yet I have long held a grudge against the cookbook, as a category of literature, for encouraging the ...
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The Joy of Mirror Making ... I recommend making a separate fine grinding tool from plaster and tiles. Strive to make the tool the same size as the mirror. More>> Fine Grinding Tools - 45 Manufacturers, Traders & Suppliers. Fine Grinding Tools - You find here 45 suppliers from Germany Switzerland and Austria. Please obtain more information on ...
A good starter size is the 150 mm (6") mirror. A 200mm (8") will also work. Most ATM books and websites recommend a Pyrex® mirror blank, but in my opinion, annealed plate glass is better for this first, "learn and practice" mirror.It is cheaper, it is softer and grinds faster, needing less abrasives and with these small sizes, the low expansion glass like Pyrex has no practical (visible at ...
Mirror Work Setup and Grinding. The history of the glass I'm working on is described elsewhere on this page. IN mid-July 2005 I got a sheet cut into 6's and 8's. The cutting process produced a lot of glass dust from the circular diamond wet saw. Oddly, the "dust" was more of a powder rather than tiny sharp fragments: similar dust is generated simply by beveling the glass with a diamond ...
Joy of Mirror Making: Rough Grinding BBAstroDesigns. Here is a 25 inch [635cm] mirror being rough ground followed by a beautiful grinding stand from the Delmarva Mirror Making Seminar. Grinding Tools To construct a grinding tool, attach unglazed ceramic tiles, 1 inch [2.5cm] square, to one of these substrates:get price
Mar 10, 2010· Gordon Waite shows some steps during fine grinding of the 20" mirror. As the grind progresses through the grades of abrasives, see the technique Gordon uses to change from 5 .
For hand grinding, the coarse grit sequence of 40, 60, 80, 120, 220 is typical (start at the grit size appropriate for your mirror diameter as given in the section above). Silicon Carbide is used almost exclusively. Fine grit sequences vary more, and are often adjusted based on the supplies at hand.
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