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telescope mirror grinding / polishing machine with ...

15-02-2016  The machine is shown grinding a 300 mm mirror.How to build a tachometer: florin.myip.org/blog/making-tachometer-grinding-polishing-machine-telescope-m...

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Constructing a Grinding Machine for large apertures - ATM ...

19-11-2018  The grinding machine I have now, pictured above, was designed to make up to a 20 inch mirror, the largest I've ever done (so far). The machine design was freely inspired by Donald Dilworth's grinding machine which he described in his landmark ST article describing his 16 inch relay lens telescope (nov-dec 1977).

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Mirror grinding - Telescope making

For a 150 mm mirror, 25 mm forward, 25 mm back. It is important that the mirror is suspended. A piece of old carpet, a old towel, or a stack of old, wet newspapers will be just fine. This will prevent astigmatism due to uneven support of the glass disc...

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

The M-o-M is a marvellous machine due to its simplicity and yet refined design. It is extremely flexible accommodating mirror sizes from 4 inch up to 20 inch (with slight modifications) and can be used for all three steps necessary in producing a mirror. That is you can use it to grind, polish and figure your optics.

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Mirror Grinding Machine

The two-axis U-joints you see are made of a soft 2"x2" pine which costs about $1.80 for 8 feet. A 3/8" hole and a 3/8" smooth shank hex head bolt makes for a surprisingly good hinge bearing. The catch basin is a 20" dish used for holding potted plants. About $5.00 at Home Depot.

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Fixed post mirror making machine - ATM, Optics and DIY ...

25-03-2009  A belt will go to a 10 inch pulley on a steel shaft. On the other end of the shaft will be a 3 inch pulley. Another belt will go from this pulley to a 15 inch pulley on a 1 1/2 inch steel shaft. On the other end of the shaft will be a 22 inch diameter turntable with the mirror.

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Grinding Machine for Large Telescope Mirrors

Grinding Machine for Large Telescope Mirrors I designed and built a grinding machine for mirrors up to 42 inches [1.1m] in diameter. By slipping on and off a couple of belts, the machine can quickly be reconfigured for spinning work or for stroking work.

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How I built an edge grinder for telescope mirror blanks.

I borrowed a few ideas from the Mirror-O-Matic mirror grinding machine, particularly how to mount the turntable on top of the pulley. Anyone building machinery for cold-working glass should have a look at the MOM web site and plans. There are lots of

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Mirror Grinding Machine Hackaday

26-09-2006  Grinding and polishing your own mirrors is a long, arduous process. Instead of lapping the blank by hand, Laurie Hall built this mirror grinding machine from scratch.

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Mirror grinding - Telescope making

In some countries telescope mirrors are unavailable, so they need to be imported, at high shipping, customs, and tax cost. A 6" (150 mm ) or 8" (200 mm) standard quality mirror will be cheaper if bought ready made. 250 mm (10") probably too.

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Building a fixed post mirror grinding machine ...

19-08-2019  A few years ago, I was thinking about hand grinding a mirror. I watched a YouTube video of John Dobson hand grinding a mirror. I don’t really remember how big it was, but it was big. Maybe 14”. Maybe larger. John was no youngster in this video and even though he is a master, he sure put a hellova lot of labor into that mirror.

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Fixed post mirror making machine - ATM, Optics and DIY ...

25-03-2009  Fixed post mirror making machine - posted in ATM, Optics and DIY Forum: I am in the process of constructing a fixed post mirror grinding machine. This will be for grinding a 20 inch mirror. I have successfully ground a 14 inch mirror by hand. I have a 1/2 hp single phase motor, the shaft rotates at 1400rpm. I want to get this down to 40 rpm using pulleys.

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Making a homemade mirror grinding machine - ATM,

06-03-2006  Making a homemade mirror grinding machine - posted in ATM, Optics and DIY Forum: I want to make a motorized mirror grinder , any good info on this , i have a couple geared motors , low speed high torque. One more question ...will 1 1/2 shaft size pillow block bearings work good for a homemade EQ mount? Thank you , John

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Mike's Telescope Workshop - mdpub

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 blank that I made myself.

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How to Make Your Own Telescope Mirror - Instructables

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 smaller sections can be difficult but scoring it with a glass cutter

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Stellafane ATM: Build Mirror Test Equipment

Build Mirror Test Equipment. Building a mirror tester is not hard, and these pages will show you how to construct a mirror tester and test stand with simple hand tools and common hardware store items. Simple, basic "glue screw" wood fabrication techniques are used. With this tester, you will be able to figure your mirror to high accuracy.

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tut44 Making A Mirror Grinding Tool - Asterism.org

Making A Mirror Grinding Tool By Allen Malsburry The average person would never think, “I can make my own telescope.” ... Telescope mirrors are relatively thick. The concave shaped face is made by repeatedly rubbing the primary glass blank over another blank called the “tool”. The tool is equal in diameter to the primary.

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Mirror Grinding Machine Hackaday

26-09-2006  Grinding and polishing your own mirrors is a long, arduous process. Instead of lapping the blank by hand, Laurie Hall built this mirror grinding machine from scratch.

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Astro-Tel - Mirror grinding machine

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. I also built another machine of the same type.

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Building a fixed post mirror grinding machine ...

19-08-2019  A few years ago, I was thinking about hand grinding a mirror. I watched a YouTube video of John Dobson hand grinding a mirror. I don’t really remember how big it was, but it was big. Maybe 14”. Maybe larger. John was no youngster in this video and even though he is a master, he sure put a hellova lot of labor into that mirror.

MoreOnline Chat

GrindingPolishingMachine - LCAO

Telescope Making. Telescope Mirror Grinding and Polishing Machine. After I had made the 41-cm telescope mirror by hand I had decided that I needed a grinding and polishing machine for the bigger mirrors I wanted to make. Specification. The machine must fullfill the following needs: It must be as compact as possible.

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Fixed post mirror grinder advice - DIY Astronomer ...

01-11-2011  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

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How to Make Your Own Telescope Mirror - Instructables

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 smaller sections can be difficult but scoring it with a glass cutter

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Making mirrors for giant telescopes - SPIE Digital Library

The Starfire project provided much of the funding for a new polishing lab built in 1990 and equipped with an 8 m grinding and polishing machine and a 24 m test tower, which were first used to figure the 3.5 m mirrors. The Mirror Lab was not free to choose the focal ratios, so these mirrors were more conservative at f/1.5 – f/1.75.

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Simulator (not only) polishing parabolic mirrors

12-03-2018  By Giulio TiberinI March 12, 2018 Roughing and grinding machines mirrors, mirror making, tools Small tutorial on using "minimum" software POLSIM for the machining of a parabolic mirror for telescope, "Assisted" by the use of a simple rotating plate, even in the digging operation of the "arrow" of the initial spherical concavity.

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Stellafane ATM: Build Mirror Test Equipment

Build Mirror Test Equipment. Building a mirror tester is not hard, and these pages will show you how to construct a mirror tester and test stand with simple hand tools and common hardware store items. Simple, basic "glue screw" wood fabrication techniques are used. With this tester, you will be able to figure your mirror to high accuracy.

MoreOnline Chat

tut44 Making A Mirror Grinding Tool - Asterism.org

Making A Mirror Grinding Tool By Allen Malsburry The average person would never think, “I can make my own telescope.” ... Telescope mirrors are relatively thick. The concave shaped face is made by repeatedly rubbing the primary glass blank over another blank called the “tool”. The tool is equal in diameter to the primary.

MoreOnline Chat

Mirror Grinding Machine Hackaday

26-09-2006  Grinding and polishing your own mirrors is a long, arduous process. Instead of lapping the blank by hand, Laurie Hall built this mirror grinding machine from scratch.

MoreOnline Chat

Astro-Tel - Mirror grinding machine

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. I also built another machine of the same type.

MoreOnline Chat

GrindingPolishingMachine - LCAO

Telescope Making. Telescope Mirror Grinding and Polishing Machine. After I had made the 41-cm telescope mirror by hand I had decided that I needed a grinding and polishing machine for the bigger mirrors I wanted to make. Specification. The machine must fullfill the following needs: It must be as compact as possible.

MoreOnline Chat

Fixed post mirror grinder advice - DIY Astronomer ...

01-11-2011  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

MoreOnline Chat

How to Make Your Own Telescope Mirror - Instructables

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 smaller sections can be difficult but scoring it with a glass cutter

MoreOnline Chat

Making mirrors for giant telescopes - SPIE Digital Library

The Starfire project provided much of the funding for a new polishing lab built in 1990 and equipped with an 8 m grinding and polishing machine and a 24 m test tower, which were first used to figure the 3.5 m mirrors. The Mirror Lab was not free to choose the focal ratios, so these mirrors were more conservative at f/1.5 – f/1.75.

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Ritchey Telescope Mirror Grinding Machine

02-03-2021  Ritchey Telescope Mirror Grinding Machine. Grinding a mirror for it is true that astronomy from a popular standpoint is handicapped by the inability of the average workman to own an expensive astronomical telescope it is also true that if an amateur starts out to build a telescope just for fun he will find before his labors are over that he has become seriously interested in the.

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how to grind a telescope mirror with an electric grinder ...

MirroroMatic mirror making machine ATM pages of. MirrorOMatic grinding machine When I decided in 2009 after a tenyear break to get into mirror making again it quickly became clear to me that I would need to construct machine as hand grinding big mirrors is not something very beneficial for the hands of a musician. Further Details

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Why self-build parabolic mirror and telescope The ...

Why self-build parabolic mirror and telescope. of: Giulio TiberinI. The reasons are differents and subjective, and one answer "tout court" cannot be given if not entering a little in the topic. At our days (year 2015) , the simple economical affordability was greatly reduced for DIY of telescopes having current and popular aperture, ie up to ...

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