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rough grinding mirror

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

Find great deals on eBay for Telescope Mirror in Telescope Mirrors and Prisms Parts and Accessories. ... Slightly rough edge which will smooth out under rough grinding.

Joy of Mirror Making: Polishing - BBAstroDesigns

After generating the f/3.9 curve using the methods described above, and thinning the edge of the blank to ½ inch, the 32 pound, 20 inch pyrex mirror blank was ready for conventional rough grinding with a full sized tool. Here is what the glass looked like just before conventional grinding:

Stellafane ATM: Rough Grinding

The same tools and equipment are used as in rough grinding. For the finer grades of grit, many people find it easier to pre-mix them with water in squirt bottles and apply the grit and water to the tool and mirror together.

Telescope Mirror Making: Part 3, Rough Grinding - YouTube

Step 12: Bonus Material: Rough and Fine Grinding the Mirror. Photo #1 shows the rough grinding process. The mirror blank is ground against a ceramic tile tool with #60 carbide grit in between. Using the correct grinding stroke ...

Notes from John Dobson's Telescope Making Class

Rough grinding is complete for the 12.5 inch honeycomb-back telescope mirror blank. The rough grinding went pretty quickly and painlessly this time.

Mirror Edge Polish Question - ATM, Optics and DIY …

Jun 04, 2012· Casting a Large, Light-Weight Telescope Mirror From ... a Large, Light-Weight Telescope Mirror From ... the mirror at the end of rough grinding.

Rough Grinding of a Telescope Mirror | Guy's Math & …

Mirror-O-Matic grinding ... offers extensive support for construction and operating that type of mirror grinding ... used which will result in rough ...

Joy of Mirror Making: Rough Grinding - BBAstroDesigns

31 rows· Mel Bartels Rough Grinding The first milestone is putting a curve into the mirror face. The curve's depth dictates the mirror's focal length. The curve should be …

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Rough Grinding a 20" Quartz Telescope Mirror on the Fixed-Post Machine. This video shows how to setup a mirror grinding machine for fixed-post grinding, also known as spin grinding or spinning.

Casting a Large, Light-Weight Telescope Mirror from ...

Home--> Mirror making. Telescope Mirror Making ... I like to do my rough grinding ... It reduces the chance that grit will get stuck in rough spots in the mirror, ...

Mirror-o-Matic mirror making machine - ATM pages of ...

Making A Mirror Grinding Tool By Allen Malsburry The average person would never think, "I can make my own telescope." Most amateur …

joy of mirror making rough grinding - elthamlodge.co.za

Grinding, Polishing and Figuring . ... Check the progress of rough grinding by slipping the gauge under a straightedge placed across your mirror. Rough grinding ...

Mirror Blank | eBay

telescope making, mirror grinding, homemade tripod, eyepieces, astronomy

How I Make Light-Weight Hexagon or Honeycomb …

Joy Of Mirror Making Rough Grinding Mel Bartels | . Coupons For Joy Of Mirror Making Rough Grinding Mel Bartels Printable Coupons For Joy Of Mirror Making Rough Grinding Mel Bartels, 2017 Coupons For Joy Of Mirror ...

Mirror-o-Matic and fixed position tool grinding - ATM ...

Fine grinding and smoothing Once the rough grinding has been completed the mirror, tool, work plate etc. should be thoroughly scrubbed and cleaned using soap solution and an old tooth brush for example. If possible, the cleats should be replaced with new ones; the work post should be cleared, the newspapers and used cloth pieces thrown away.

Help ! rough grinding 16" mirror - ATM, Optics and DIY ...

We provide a complete line of amateur telescope making (ATM) supplies including, Mirror kits, Pyrex, abrasives, pitch and polishing compounds

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

Waite Research Telescope Mirrors. Rough Parabolizing Part 1: Preparations and Working a Central Hill ... Rough Grinding on the Fixed-Post Mirror Grinding Machine.

Waite Research Telescope Mirrors :: Home

Sep 23, 2012· After hogging the mirror blank to depth, the rough grinding stage begins. In this video I am grinding with 60/90 grit. The wets are lasting about 90 seconds ...

tut44 Making A Mirror Grinding Tool

Rough grinding is often called "Hogging Out", as your goal is to remove the majority of the glass needed to form the curve of your mirror.

Making the 20 inch Conical Mirror | Pierre Lemay

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.

Telescope Mirror Making - Frontier Homepage …

The Joy of Mirror Making Mel Bartels Polishing Polishing a mirror is one of the great joys you will experience as a maker and builder. ... Rough Grinding

Rough Grinding a 20" Quartz Telescope Mirror on the …

Lens & Mirror Making • Best lenses and mirrors are both made by grinding the ... • For mirrors only surface needs to be ... • Use a grinding tool to make rough ...

Telescope Mirror | eBay

Dec 15, 2014· (Part two of my description of the essential steps in making a telescope) 2. Hogging Out means making your mirror blank have roughly the proper concave shape for the focal length or f-ratio that you want.

Lens & Mirror Making Best lenses and mirrors are …

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...

Large Homemade Telescope Making Project - Google …

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. Find this Pin and more on Astronomy Telescope by makethingsman. Rough Grinding a 20" Quartz Telescope Mirror on the Fixed-Post Machine See more

Casting a Large, Light-Weight Telescope Mirror from ...

Jul 13, 2014· Help ! rough grinding 16" mirror - posted in ATM, Optics and DIY Forum: Hello, Grinding a 16 blank, plate glass....I am currently 5/8 - 3/4 from the outside edge using a ring tool (7.5 lb. barbell plate, by hand) around a 55 gallon drum.

Stellafane ATM: Mirror Making Overview

Photo #1 shows the rough grinding process. The mirror blank is ground against a ceramic tile tool with #60 carbide grit in between. Using the correct grinding stroke ...

Casting a Large, Light-Weight Telescope Mirror From ...

That means that they grind the rough curve into the mirror's face before I receive the glass. This is economical, ... After rough grinding, ...

Ed Grinds a Mirror - scopereviews.com

Notes from John Dobson's Telescope Making Class. ... When performing rough grinding, hold the mirror on both sides and place …

COMBICLICK® Fibre Discs, Non-Wovens and Backing Pads

The range of solutions has now been increased to include CC-GRIND Discs for rough grinding applications, ... prepolish and polishing to a mirror finish. ...