MB5X Grinding Mill

MB5X Pendulous Hanging Grinding Mill represents the most advanced grinding processing technology. The brand-new structural design ;

Hammer Mill

Hammer Mill is specially designed for coarse powder grinding and small size of sand production. Hammer Mill adopts some principles of crusher. Because of its special design,…

Ball Mill

Ball mill has been used in many industries for a long time, the technology is quite mature already. But there are still some problems, such as, lots of investors expressed…

MTM Series Trapezium Mill

Raymond mill is ever one classic powder grinding machine in the past. And most of modern mill are from it and MTM series milling machine is the most successful one. It optimized…

LM Vertical Roller Mill

Vertical Roller Mill is our newly-launched product which is applied as a solution to the technical issues such as low output and high energy consumption in the ordinary industry.…

MTW Series Trapezium Mill

MTW Series European Trapezium Grinding Mill (MTW Raymond Mill) is developed on the basis of our experts' long-term R & D experience, structure & performance analyses of traditional…

mirror grinding kit grind and polish telescope mirror at ...

* 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 made from borosilicate glass. Please see the Buy Telescope Mirror Blanks

Stellafane ATM: Fine Grinding

Placing the mirror face up and grinding with a moderate "W" stroke will also move the curve toward the edge, and tends to produce a more spherical surface. Leaving the mirror grossly hyperbolic will make fine grinding difficult. Fine Grinding . We've all heard stories about fine grinding taking hundreds of …

Mirror grinding | Hacker News

Each optical surface is tested up to 29 times as it passes through its many processes of being turned from a blank piece of glass to a highly accurate figured mirror or lens. Below is our selection of Telescope Mirrors available to purchase and a brief description of each grade's qualities.

Mirror grinding - scope making

May 11, 2017· Page 1 of 3 - Mirror Grinding - Take A Class Or DIY? - posted in ATM, Optics and DIY Forum: Ive been interested in grinding/polishing my own Newt mirror for a long time but dont know how to get started. As a beginner, would you recommend attending a workshop or class or is it possible to make a good mirror using other learning resources such as books and online videos?

Mirror grinding Table? - ATM, Optics and DIY Forum ...

Fixed-post machine grinding is where the mirror is on a turntable rotating around 20 PRM [speeds vary], and a 75% tool is on top. They are already curve-generated. The tool is hanging over the mirror by 1/6 the diameter of the tool, or about 1/8 diameter of the mirror, and is fixed in this position.

Fixed post mirror grinder advice - DIY Astronomer ...

Aug 09, 2011· 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 ...

Build your own telescope part 1: The mirror – Thomas ...

Welcome to Brahmani Grinding & Engineering. In year 1995, two young entrepreneurs came together and laid the foundations of a company which today is widely regarded as the leader in providing surface engineering solutions through use of modern technologies in field of surface engineering.

Telescope Making Supplies

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.

Build your own telescope part 1: The mirror – Thomas ...

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. 400 grade ginding powder. 303 grade smoothing powder. Top quality Cerium Oxide Polishing powder.

Joy of Mirror Making: Polishing - BBAstroDesigns

The problem with thin mirrors is that they flex more easily during grinding and polishing, making it hard to achieve the required surface precision. They also need a more complex mirror cell (additional support points). Plop is a useful software to let you calculate the number of points needed based on the diameter and thickness of the glass:

Is there an easy and safe way to trim/grind the edge of a ...

Nov 01, 2011· Basically there are two types of grinding/polishing machine. The 'traditional' type which involves the mirror rotating at a relatively slow speed, a few rpm for a big mirror (16-20 inches) with the tool moving across the mirror, from side to side, at a higher rpm depending on the size of the mirror …

Joy of Mirror Making: Rough Grinding - BBAstroDesigns

A mirror mount is needed to hold the mirror during testing. If the mirror is a 'thin' mirror (i.e. the thickness is much less than 1/8th its diameter) then the mount must hold the mirror without deforming it. The weight of the glass can deform a thin mirror. In my case, I was making a full-thickness mirror, which is a mirror whose thickness is 1/8th the diameter or more, so mirror deformation ...

Mirror Roller, Mirror Rollers, Supper Finish, Ahmedabad ...

* 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 made from borosilicate glass. Please see the Buy Telescope Mirror Blanks

Joy of Mirror Making: Fine Grinding - BBAstroDesigns

When you started rough grinding, you sprinkled dry abrasive on the mirror and added water with a spay bottle. This works well for coarser grits. Many people find it easier to apply the finer grits (usually those measured in microns and not grit number) in a pre-mixed water-grit slurry held in a …

Stellafane ATM Main Page

Grinding and polishing the mirror is the most difficult part of making a telescope. And the most critical. Mirror-making is a hobby that has been around for many years, and many people have put their hands to the task, but it is time consuming, requiring a great deal of skill, patience and perseverence. Especially when the mirror gets big.

Making a Tile Tool for Mirror Grinding (in 150 seconds ...

31 · The center will deepen during the first stage of fine grinding as contact is achieved across the …

mirror grinding kit grind and polish telescope mirror at ...

Typically, the primary mirror is made of glass. Pyrex is commonly used for the primary mirror because of its thermal stability, but for small mirrors, plate glass will work fine too. Telescope mirrors are relatively thick. The concave shaped face is made by repeatedly rubbing the primary glass blank over another blank called the "tool".

Telescope Mirror Blanks / TelescopeMirrorBlanks.Com ...

TOOLUXE 20734L Telescoping Inspection Mirror | Includes Two 2-1/4" Glass Mirrors | 30" Retractable Handle. 4.5 out of 5 stars 660. $13.57 $ 13. 57. Get it as soon as Thu, Oct 8. FREE Shipping on your first order shipped by Amazon. More Buying Choices $7.02 (2 new offers)

Swayze Optical! - Home Page

Then after grinding the mirror face with 220 grit, cleanup thoroughly and flash polish by polishing for 15 minutes. Don't go onto finer grits until the astigmatism is gone. The second is to identify the saddle orientation, and using a sub-diameter lap, locally polish the ends of the saddle.

: telescope mirrors

Mirror Grinding Stand (above) The front view and top views show the Mirror Grinding Stand with its wide base (big enough to walk around on), pedestal, and small top. The top is only a little bigger than the largest mirror you wish to grind. The mirror tool is held to the table with three screwed down blocks and six small wedges.

Woodware: Mirror Grinding Stand

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. 400 grade ginding powder. 303 grade smoothing powder. Top quality Cerium Oxide Polishing powder.

Astro-Tel - Mirror grinding machine

Jim's Mobile, Inc. (JMI Telescopes) is a world renowned manufacturer of astronomical telescopes and aftermarket accessories for the amateur and professional astronomer. We manufacture telescopes and accessories such as telescope wheels, carrying cases, guiding computers, focusers, motors and motor controls and much more.

tut44 Making A Mirror Grinding Tool - Asterism.org

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.

Newport Glass Works, LTD. Grinding, Polishing and Figuring ...

MIRROR GRINDING MACHINE. I made my first mirror grinding and polishing machine over thirty years ago. It used the working principle of the machine illustrated at "A" Fig.3, Page 163, "Amateur Telescope Making" Book 1. A bowl which rotated was fitted to the spindle.

Grinding a 25-Inch F3 Telescope Mirror: Thinning and ...

I'm trying to fit a pre-cut mirror glass (rescued from a $5 Wal-Mart mirror) into the back of a shadow box. The mirror itself is not quite square, so there is one corner and part of the adjacent edge which won't quite fit into box (about 0.5 mm overlap). If this was wood or plastic, I'd grab some sandpaper and bring the edge down to fit.