mirror grinding blanks
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Telescope Mirror Blanks / TelescopeMirrorBlanks.Com
* Thin plate glass mirror blanks are lighter than standard mirror blanks, which allows you more flexibility in designing your telescope tube assembly and mount. * When grinding a telescope mirror, you will find that plate glass takes less time to grind and polish than a mirror
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Buy mirror blanks for telescope making
10 Inch Mirror Blanks, 3/4" Thick: $55 + S&H (16);Shipping prices are to the USA not shipping outside the US, sorryCombined shipping is possible Write. For a complete mirror making KIT, with all abrasives, polishing compounds, pitch, and grinding tool included, please see our Buy Telescope Mirror
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King Telescopes, telescope mirror blanks, using both
We recommend Pyrex over plate glass simply because it is much easier to build your first mirror with pyrex. The low coefficient of expansion of Pyrex makes a difference during the grinding process. Plate Glass, particularly thin blanks, can be warped by the warmth of your hand, expandings the glass into the tool, and grinds unevenly.
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Telescope Mirror Blanks Manufacturer and Supplier
AGI also supplies Schott SUPREMAX 33 mirror blanks. SUPREMAX 33 is a borosilicate Pyrex equivalent, and is an excellent alternative for telescope mirror blanks. Our blanks have the following standard characteristics: Precision annealed material (6 Mu or less guaranteed) Edges diamond ground with a 220 grit finish. Dimensional tolerances +/-.010”.
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Mirror grinding scope making
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
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What are the best sources for mirror blanks? ATM, Optics
Jun 12, 2016· What are the best sources for mirror blanks? posted in ATM, Optics and DIY Forum: Ever since I found Stellafanes mirror making page, Ive been itching to build my own telescope. Im going to start with a 6-8in. Newt (the classic beginning ATM project!). All I need now are the materials! I can find the yogurt containers pretty easily. For the rest of it, I had to do a little searching.
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Got Grit
11.5" Plate Glass Blank $100.00USD: WAO 25 Micron 5 LB $27.65USD: WAO 15 Micron 5 LB $31.95USD: WAO 12 Micron 5 LB $31.95USD: WAO 9 Micron 5 LB $33.30USD: WAO 5 Micron 5 LB $34.65USD: SIC #500 5 LB $43.85USD: SIC #320 5 LB $34.85USD: SIC #220 5 LB $20.95USD
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Mirror Making Material Stathis Firstlight
Sizes of 400 mm and up require some experience in mirror making. On request I can grind the backside flat up to grit 320 for 10,- to 30,- Euro, according to effort (recommended for 255 mm and larger and for the small very thin blanks, to avoid astigmatism) Thicker Borosilicate Glass Blanks: Available in the thicknesses 31,5 / 34,5 / 41,3 / 47,6...
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Mirror Blanks Suppliers Photonics Buyers' Guide
blank A piece of glass, quartz or other transparent material formed roughly by molding or cutting into the approximate shape and size of the finished part.; mirror blank The material on which the reflecting coating for a given mirror design is applied. It may be glass, quartz, Cer-Vit or metal. The thickness must be adequate to prevent distortion of the surface under gravity, and a low thermal
Ask for priceKing Telescopes, telescope mirror blanks, using both
We recommend Pyrex over plate glass simply because it is much easier to build your first mirror with pyrex. The low coefficient of expansion of Pyrex makes a difference during the grinding process. Plate Glass, particularly thin blanks, can be warped by the warmth of your hand, expandings the glass into the tool, and grinds unevenly.
Ask for priceGot Grit
11.5" Plate Glass Blank $100.00USD: WAO 25 Micron 5 LB $27.65USD: WAO 15 Micron 5 LB $31.95USD: WAO 12 Micron 5 LB $31.95USD: WAO 9 Micron 5 LB $33.30USD: WAO 5 Micron 5 LB $34.65USD: SIC #500 5 LB $43.85USD: SIC #320 5 LB $34.85USD: SIC #220 5 LB $20.95USD
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Telescope Making Supplies willbell
Pyrex Mirror Blanks* Size (inches) Thickness (inches) Price US$ 1.00. 0.75. $7.95. 1.75. 1.00. $8.95 *Strain Birefringence: 10 millimicrons, or less: Very sharp and long lasting to help you form your curve fast and accur ately. You can rely on Willmann-Bell’s optical grade abrasives because they are accurately graded to ensure that no larger
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Joy of Mirror Making: Rough Grinding BBAstroDesigns
More importantly, the glass tool can be saved and used later as a mirror blank for a second project. Grinding Stands. I use an old printer stand. Here is a 25 inch [635cm] mirror being rough ground followed by a beautiful grinding stand from the Delmarva Mirror Making Seminar.
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How I make Telescope Mirror Blanks mdpub
Now that I have several blanks made, it is time to grind and polish one into a telescope mirror and test it out. I can use one blank as the mirror and another as the grinding tool, and have a couple in reserve in case something goes horribly wrong during the grinding and polishing operations. I'll post an update once a mirror is completed.
Ask for priceMirror Making Material Stathis Firstlight
Sizes of 400 mm and up require some experience in mirror making. On request I can grind the backside flat up to grit 320 for 10,- to 30,- Euro, according to effort (recommended for 255 mm and larger and for the small very thin blanks, to avoid astigmatism) Thicker Borosilicate Glass Blanks: Available in the thicknesses 31,5 / 34,5 / 41,3 / 47,6...
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How I Make Light-Weight Hexagon or Honeycomb Telescope
Rough grinding is complete for the 12.5 inch honeycomb-back telescope mirror blank. The rough grinding went pretty quickly and painlessly this time. I only have maybe 12 hours of actual work in the mirror so far. It's hard to believe, but the rough grinding has removed over a pound of glass. The mirror now weighs in at only only 8 pounds 15 ounces.
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Mirror blanks ATM, Optics and DIY Forum Cloudy Nights
Nov 28, 2020· Mirror blanks posted in ATM, Optics and DIY Forum: Where are people getting mirror blanks from. I am being given an 8 inch mirror blank and grinding kit. After I do that mirror I want to grind a 14 to 18 inch mirror. How much should I expect to pay.
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Telescope Products & Services Galvoptics
Telescope Products & Services. We offer a range of products and services for the ameteur telescope enthusiast such as grinding powders, polishing powders /compounds, telescope aluminising services. We offer a Telescope mirror re coating service for both Primary and Secondary telescope mirrors. We also offer a recoating service for Sextant mirrors.
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Telescope Mirror Kits Firsthand Discovery
Want to build your own telescope? 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 polish it to your specifications. Please note that our kits do not include a grinding tool or pitch
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Fast Mirror Grinding & Polishing The ATMs Workshop
Nov 15, 2001· More than that range warrants curve generation, less is adequately handled with the normal ring tool grinding methods. Mirror Polishing Techniques . After grinding the back of my 17.5" blank flat, I decided to polish it to make the detection of pits on the front surface easier.
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How to grind a mirror for a telescope YouTube
How to grind a mirror blank into the well-figured basis for a Dobsonian telescope. How to grind the glass, how to carry out a focus test, how to polish with
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Large Thin Mirror Making BBAstroDesigns
After 10 to 20 minutes, the grinding compound will exhaust itself and thin out. If you persist, the chance of creating a bad scratch or sticking is high. Clean mirror and tool and recharge. 9 micron will take you 2 hrs to 8 hrs depending on tool and mirror size. The mirror will reflect light at a low angle of graze.
Ask for priceMirror Blanks Suppliers Photonics Buyers' Guide
blank A piece of glass, quartz or other transparent material formed roughly by molding or cutting into the approximate shape and size of the finished part.; mirror blank The material on which the reflecting coating for a given mirror design is applied. It may be glass, quartz, Cer-Vit or metal. The thickness must be adequate to prevent distortion of the surface under gravity, and a low thermal
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tut44 Making A Mirror Grinding Tool Asterism
Making A Mirror Grinding Tool By Allen Malsburry The average person would never think, “I can make my own telescope.” Most amateur astronomers believe, “I can buy a better telescope than I can build.” of the mirror blank using the tool you just finished:
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11.5" Plate Glass Blank $100.00USD: WAO 25 Micron 5 LB $27.65USD: WAO 15 Micron 5 LB $31.95USD: WAO 12 Micron 5 LB $31.95USD: WAO 9 Micron 5 LB $33.30USD: WAO 5 Micron 5 LB $34.65USD: SIC #500 5 LB $43.85USD: SIC #320 5 LB $34.85USD: SIC #220 5 LB $20.95USD
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Mirror-o-Matic mirror making machine ATM pages of
Generating the curve on a mirror blank is a tedious process when done manually or a messy (and dangerous) affair when done with machines. After reading an article by Ed Jones about using diamond pellets for that task, I wanted to try the idea on the grinding machine.
Ask for priceMirror blanks ATM, Optics and DIY Forum Cloudy Nights
Nov 28, 2020· Mirror blanks posted in ATM, Optics and DIY Forum: Where are people getting mirror blanks from. I am being given an 8 inch mirror blank and grinding kit. After I do that mirror I want to grind a 14 to 18 inch mirror. How much should I expect to pay.
Ask for priceLarge Thin Mirror Making BBAstroDesigns
After 10 to 20 minutes, the grinding compound will exhaust itself and thin out. If you persist, the chance of creating a bad scratch or sticking is high. Clean mirror and tool and recharge. 9 micron will take you 2 hrs to 8 hrs depending on tool and mirror size. The mirror will reflect light at a low angle of graze.
Ask for priceFast Mirror Grinding & Polishing The ATMs Workshop
Nov 15, 2001· More than that range warrants curve generation, less is adequately handled with the normal ring tool grinding methods. Mirror Polishing Techniques . After grinding the back of my 17.5" blank flat, I decided to polish it to make the detection of pits on the front surface easier.
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Mirror Grinding Machine
My Mirror Grinding Machine. For a long time I've wanted to build a machine for grinding telescope 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. Most of them came from industrial junk yards.
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Five Star Optical Supply|Quartz Mirror Blanks for Telescopes
Following in the footsteps of Greg Rohde (Superior Optical Supply), new owners Tim and Chris Anderson (Five Star Optical Supply) will continue to provide high quality, quartz mirror blanks to the amateur astronomy market. Quartz is a very pure glass with an extremely high melting point. Because quartz is much stronger than its Pyrex counterpart
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Build your own telescope part 1: The mirror Thomas
Starting from a rough glass blank, you can obtain an almost perfect parabola with surface errors in the range of 20 to 60 nm. And this, only by pushing a piece of glass by hand. Let’s break down the process into 5 steps. Rough grinding. This step is about making one side of the glass concave. It will give your mirror its overall focal ratio.
Ask for priceNewport Glass Works, LTD. Grinding, Polishing and Figuring
In addition to finding a blank for the mirror, you will need another disk for a grinding tool. It may be either a solid glass tool or a plaster tool covered with hard ceramic tiles once again, your taste, energy, and previous experience will dictate what you want to try.
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Woodware: Mirror Grinding Stand
Still grinding your own mirror is a key skill that makes you a real telescope maker. To grind a telescope mirror by hand you simply attach a glass tool the same size as your mirror blank to the top of a small, strong stand. You apply grinding compounds to the tool and place the mirror blank on top.
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Fixed post mirror grinder advice DIY Astronomer
Nov 01, 2011· I'm sure you'll do fine with the grinding Steve, I was just a little taken aback by the rotation speed, but as long as the mirror has three robust cleats in place to hold it, it shoudn't fly off. Many years ago I made a machine to grind large blanks,but the largest I did was a 16" f4.5.
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