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HGT Hydraulic Gyratory Crusher

HGT Hydraulic Gyratory Crusher

HGT Gyratory Crusher is a new-type intelligent coarse crusher with big capacity and high efficiency. It integrates mechanical, hydraulic, electric, automated, and intelligent controlling technologies which grant it with advantages traditional crushing

European Type Jaw Crusher PEW

European Type Jaw Crusher PEW

Jaw crushers has stationary jaw crusher, portable jaw crusher and mobile jaw crusher (crawler jaw crusher). Jaw crusher (PEW Series) is not only able to be used together with mine-selecting and gravel processing equipments but also be used independen

Jaw Crusher PE

Jaw Crusher PE

Jaw crusher is driven by a motor, and the moving jaw moves up and down via eccentric shaft. The angle between fixed jaw and moving jaw becomes smaller when the moving jaw runs down, then the materials are crushed into pieces. It will become bigger whe

HPT Hydraulic Cone Crusher

HPT Hydraulic Cone Crusher

Base on the latest technology and decades of years’ producing experience, Our Company designed the HPT series cone crusher. It has excellent crushing efficiency and good hydraulic control system. Now the HPC series cone crusher has wide application

HST Hydraulic Cone Crusher

HST Hydraulic Cone Crusher

HST Single Cylinder Hydraulic Cone Crusher is a new high-efficiency cone crusher independently researched, developed and designed by SBM through summarizing over twenty years of experience and widely absorbing advanced American and German technologies

CI5X Series Impact Crusher

CI5X Series Impact Crusher

CI5X Impact Crusher breaks materials with impact force. When materials enter the working area of hammer, they may be crushed under the high-speed shock and then thrown onto the impact device above the rotor for another crushing. Next, materials bounce

VSI6X Series Vertical Crusher

VSI6X Series Vertical Crusher

Due to the increasing market demand for the scale, intensification, energy conservation, environment protection and high-quality machine-made sand, SBM, a Chinese professional sand maker manufacturer, further optimizes the structure and function of tr

VSI5X Vertical Shaft Impact Crusher

VSI5X Vertical Shaft Impact Crusher

VSI Crushers Working Principle Raw material falls down into feed hopper, and then enters rotor through central entrance hole. It is accelerated in high-speed rotor, and then is thrown out at speed of 60-75m/s. When hitting anvil, it is crushed. Final

VSI Vertical Shaft Impact Crusher

VSI Vertical Shaft Impact Crusher

VSI Series vertical shaft impact crusher is designed by reputed German expert of SBM and every index is in worlds leading standard. It incorporates three crushing types and it can be operated 720 hours continuously. Nowadays, VSI crusher has replaced

VUS aggregate optimization system

VUS aggregate optimization system

The VU system is a global most-advanced dry-process sand-making system. The system is constructed like a tower. Its fully-enclosed layout features high integration. It integrates the functions of high-efficiency sand making, particle shape optimizatio

MTW-Z European Trapezium Mill

MTW-Z European Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

5X Series Roller Grinding Mill

5X Series Roller Grinding Mill

Grinding roller of MB5X Pendulum Roller Grinding Mill l adopts diluted oil lubrication. It is a technology initiated domestically which is maintenance-free and easy to operate. Diluted oil lubrication is oil bath lubrication, more convenient than grea

MTW Trapezium Mill

MTW Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

LM Vertical Mill

LM Vertical Mill

LM Vertical Grinding Mill integrates crushing, drying, grinding, separating and transport. The structure is simple while the layout is compact. Its occupational area is about 50% of that of the ball-milling system. The LM grinding mill can also be arr

TGM Trapezium Mill

TGM Trapezium Mill

TGM Super Pressure Trapezium Mill The operation principle of main unit of Trapezium mill is that main unit runs with the central shaft that is driven by a gear box. The top of the shaft is connected with a quincunx stand on which a grinding roller is

how to grind a telescope mirror

How to grind a mirror for a telescope YouTube

09/08/2011· 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

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Grind and Polish a Dobsonian/Newtonian Telescope Mirror

Grind and Polish a Dobsonian/Newtonian Telescope Mirror With Hand Tools Step 1: Determine Your Mirror's Focal Length and Sagitta. You'll want to first determine the shape of your mirror and Step 2: Build Your Work Surface and Start Hogging Out Glass. Once you have your sagitta calculated so you

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Make your own telescope mirror: Rough grinding YouTube

03/04/2020· Welcome to my channel in this video, we will begin to make a telescope mirror from scratch! I'll be showing you the basics of telescope mirror grinding!Her...

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Hand Grinding a Telescope Mirror Make:

30/05/2014· This is how you make a telescope mirror out of a hunk of glass: Use a sand mixture and another piece of glass to grind away the middle of a concave shape. Repeat with finer and finer grit sand. Dave Barosso demonstrates the technique, but to do it yourself, try to visit one of the Telescope Makers Workshop‘s classes on Friday nights in Oakland.

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Preparing to Grind a 22" f/4.0 Telescope Mirror YouTube

10/02/2014· This video shows preparations for grinding a 22" f/4.0 telescope mirror. This is the first mirror of a pair that will become a 22" binocular scope! Gordon Wa...

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Mirror grinding Telescope making

Mostly on the mirror size you wish to grind, and the prices of the local market. In the US, telescope mirrors are the cheapest. A decent 6" (150 mm) mirror can be bought for under 100$. In Europe, prices are usually twice, if not three times that. In some countries telescope mirrors are unavailable, so they need to be imported, at high shipping, customs, and tax cost.

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Rough Grinding of a Telescope Mirror Guy's Math & Astro

15/12/2014· B, To grind the mirror, we use relatively coarse grit (silicon carbide, which is not toxic at all) mixed with ordinary tap water. The water acts as a lubricant and also to keep down the glass dust silica dust causes very serious lung problems if it’s dry. So we keep it wet. We begin with either 50, 60, or 80 grit, depending on the size of the mirror. We put the tool (another cylindrical

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How to grind a parabolic mirror for telescope ? Yahoo

05/05/2010· You grind the mirror blank by rubbing it on a glass tool using increasingly fine abrasives. Then you polish the mirror and figure it to a parabola using a Foucault tester. Finally you send it away to get it coated with aluminum. A shaving mirror is not made to an accurate enough figure for astronomical use, and is not a first-surface mirror, so produces double images.

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24" F/6 thin telescope mirror grinding 3/4" plate ATM

06/11/2013· Page 1 of 2 24 F/6 thin telescope mirror grinding 3/4 plate posted in ATM, Optics and DIY Forum: A friend and I have decided to grind this as a fun yet challenging project. I have ground and polished several mirrors including a 6, 8.5, 9.2, and 14.7 quartz mirror. I have decided to take the next step with this ultra-thin setup. I know it is bordering on the edge of extremely thin with a 32

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Build your own telescope part 1: The mirror Thomas

Even though some builders prefer to buy commercial mirrors and fit them in a DIY structure, I believe that making a telescope mirror is probably the most rewarding part of the whole built. 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

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Rough Grinding of a Telescope Mirror Guy's Math &

15/12/2014· B, To grind the mirror, we use relatively coarse grit (silicon carbide, which is not toxic at all) mixed with ordinary tap water. The water acts as a lubricant and also to keep down the glass dust silica dust causes very serious lung problems if it’s dry. So we keep it wet. We begin with either 50, 60, or 80 grit, depending on the size of the mirror

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How to grind a parabolic mirror for telescope ? Yahoo

06/05/2010· You grind the mirror blank by rubbing it on a glass tool using increasingly fine abrasives. Then you polish the mirror and figure it to a parabola using a Foucault tester. Finally you send it away to get it coated with aluminum. A shaving mirror is not made to an accurate enough figure for astronomical use, and is not a first-surface mirror, so produces double images.

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Using the Fixed-Post Grinding Machine for Rough

16/02/2014· Gordon Waite sets up his fixed-post mirror grinding machine to begin rough grinding on an 11" f/4.3 telescope mirror. He uses a grinding tool made from dental plaster and steel pieces to speed up

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Mirror Grinding Take A Class Or DIY? ATM, Optics and

11/05/2017· When I ground my first mirror the only guidance I had were ATM book 1 and Making Your Own Telescope by Allyn J. Thompson. I ground, polished, and figured the mirror on top of an old washing machine. I used the Focault knife edge test when figuring the mirror. Then I got together all of the chemicals required and chemically deposited a silver layer on the mirror. My second mirror was

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Newport Glass Works, LTD. Grinding, Polishing and

To grind, place the mirror face up on something soft like an old piece of deep shag carpet so the glass won't rock. (The carpet will ruined.) Wet it down, add the appropriate amount of #60 abrasive, add a few pounds to the top of the tool if you wish, and grind like mad. When it stops making lots of noise, splash it off and start it again.

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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. To use these parts, I had to modify some of Dennis' plans. How I did it is described below. This

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Stellafane ATM:Mirror Making Myths

Why would grind a mirror when you can buy one just as cheaply? When the North American amateur telescope making movement began in the 1920's, there were few alternatives the only commercial telescopes where extremely expensive and often where individually commissioned. Making your own was the only way for most people. Today, commercial telescopes are affordable, as well as optical

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MIRROR MAKING: “HOW TO MAKE YOUR OWN

A To make a telescope mirror from a flat disk (of glass), the flat surface has to be changed to a spherical / parabolic surface, because a flat surface can only reflect light in the same opposing angle as it comes to the surface, but for a enlarged view to be seen, the light has to come to a small focal point, at our eye or camera lens, therefore the surface is changed by grinding and

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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. Ok, so this process isn't really quicker or easier

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TELESCOPE MIRROR ALUMINISING Telescopes &

TELESCOPE MIRROR ALUMINISING Mirror Size (ins) Aluminium + Quartz R>91% Aluminium Enhanced R>95% Silver Enhanced + Protected R>98% 6" $210AUD $245AUD $275AUD 8" $270AUD $305AUD $342AUD 10" $330AUD $365AUD $409AUD 11" $360AUD $395AUD $443AUD 12.5" $405AUD $440AUD $493AUD 14.5" $465AUD $500AUD $560AUD 16" $510AUD $545AUD

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