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…

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

bolic mirror and grinding your own. Grinding astronomical mirrors is a fasci­ nating hobby in itself. It does, however, re­ quir e a healthy degre of skill and patience. We have chosen, therefore, to illustrate …

Telescope Mirror Blanks / TelescopeMirrorBlanks.Com ...

Primary Mirror Dimensions. Primary Mirror type. Focal length nominal mm. Edge thickness mm * Diameter mm. Weight g. Ultrascope 150 f4. 600. 18. 151. 745. 150 f5. 750 ...

Mirror grinding - scope making

I am thinking of re-starting mirror grinding at home. I used to grind by hand and in this method, when we use the 1/3rd off-centre strokes for hogging out the sagitta, the upper glass becomes concave and would be polished into a mirror. ... There's no need to build …

Mirror Grinding Build - ccbvenezia.it

Making A Mirror Grinding Tool By Allen Malsburry ... "I can buy a better telescope than I can build." Neither is actually correct. For many decades now, amateur astronomers have been building their own telescopes. In the good old days, building your own telescope was the only way to …

How I built an edge grinder for telescope mirror blanks.

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 …

Telescope Making Supplies

Jumping into Mirror Making Michael Mills. I have been preparing to grind my own primary mirror for a long time. I've collected many fine books on telescope making and mirror grinding, including Richard Berry's Build Your Own Telescope, Sam Brown's All About Telescopes, and Jean Texereau's How to Make a Telescope.I read through all of these books, ordered a 6" mirror …

Mirror-O-Matic - Dr. Debug

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 telescope (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.

Fixed post mirror grinder advice - DIY Astronomer ...

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.

Mike's Telescope Workshop - Mike's World.

31 · Grinding the curve into the mirror face can be done by one of the following approaches: Ceramic tiled tool ground against the mirror face. Glass tool ground against the mirror face. Ring tool. Motorized grinding wheel on the end of along boom that is anchored that is moved back and forth across the mirror face.

tut44 Making A Mirror Grinding Tool - Asterism.org

I finally decided it was time to build a machine to help me grind the edges of the blanks true and round. This is my home-built edge grinding machine for grinding down my home-cast mirror blanks. Click to see the whole project. This is a 12.5 inch diameter, 1.5 inch thick, light-weight honeycomb-back telescope mirror …

Building a fixed post mirror grinding machine ...

Aug 16, 2010· In 1920 fifteen men and one woman showed up for the first telescope-mirror grinding class offered by Russell Porter. That's still roughly the male/ ratio among amateur telescope …

Woodware: Mirror Grinding Stand

Mar 07, 2010· This video shows how to setup a mirror grinding machine for fixed-post grinding, also known as spin grinding or spinning. After setup, you'll see how abrasiv...

REFLECTOR TELESCOPE KITS—You - Vintage Projects

How to Make Your Own Telescope Mirror: [Fig 1] This is a large piece of glass a woman off Craigslist gave me. It was 40"x40" and 0.75" thick. Its what I decided to use to make the mirror. Cutting it into …

Mirror Grinding Build - ccbvenezia.it

I decided to try my hand at grinding an polishing my own mirror. Before I took the plunge of buying glass I wanted to see if I could build the required devices needed to grind, polish, and test a mirror. Build a Ronchi / foucault tester. Build a machine to grind the mirror (AKA mirror-o-matic) Buy some glass. Mirror …

Making a homemade mirror grinding machine - ATM, Optics ...

Mar 06, 2006· As promised I was able to find time to develop a 3D model of the overhead bridge for my mirror grinding ad polishing bench. The construction is quite simple. The shuttle rides back and forth on a bridge made from two pieces of quarter angle aluminum. The shuttle is grooved to allow the extrusion to ride in the slot which is lined with Teflon.

Mirror Grinding Kits - Salon Del Mar

Mar 07, 2010· This video shows how to setup a mirror grinding machine for fixed-post grinding, also known as spin grinding or spinning. After setup, you'll see how abrasiv...

Woodware: Mirror Grinding Stand

Throughout the grinding and final lapping stages, the objective has been to reduce pits and scratches to the smallest possible size. However, no amount of grinding can produce a surface smooth enough or sufficiently transparent to meet the needs of a first-class telescope objective. Different techniques are …

Mirror Grinding - DIY Astronomer - Stargazers Lounge

Making A Mirror Grinding Tool By Allen Malsburry ... "I can buy a better telescope than I can build." Neither is actually correct. For many decades now, amateur astronomers have been building their own telescopes. In the good old days, building your own telescope was the only way to …

Optical Testing of Parabolic Mirrors : 9 Steps (with ...

* 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 …

Joy of Mirror Making: Rough Grinding - BBAstroDesigns

My favorite method is to grind with the chordal stroke a bit deeper (0.2-0.3 mm on this mirror size) than the target saggita, then use TOT until end of grinding. This saves a lot of grit! As you might noticed by now, much of the grit is wasted as it falls in the space between the tiles.

Telescope Making Supplies

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 ...

How to Make Your Own Telescope Mirror - Instructables

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 …

DIY Mirror Grinding and Telescope Making - Google Sites

Grinding the secondary is just like grinding any other optic except in minature. I ground the secondary with the workstand and worked the tool on top just like I would grind a larger mirror. This optic is small enough that a lens grinding machine could work well.

Jumping into Mirror Making, by Michael Mills

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. …

MAKE YOUR OWN TELESCOPE KITS – Sharp Vision Telescopes

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 …