Stellafane ATM:Mirror Making Myths

You may notice that many commercial telpe advertisements proclaim they use "Hand Figured Optics" - in fact this is one of the best and least expensive ways to get an accurate surface on a mirror - most machines just can't hold the tolerances necessary, and any good telpe optic, including the mirror you could make in your kitchen, should be hand figured.

Mirror Grinding Machine

My Mirror Grinding Machine. For a long time I've wanted to build a machine for grinding telpe 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, …

Mirror Grinding Machine | Hackaday

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.

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 …

Building a fixed post mirror grinding machine ...

Re: Building a fixed post mirror grinding machine. I I had a nice piece of 3/4" stainless dowel that was begging to be used. So I bought a cheap pillow block to provide the locator for the metal dowel, and then drilled the overarm to fit. These pillow blocks are $8 and come complete with a locking collar - great deal.

grinding / polishing machine for telpe mirrors ...

Mechanical assembly is complete. The machine could start grinding now. I still need to build the electronics, and then there's painting and finishing.

telpe mirror grinding / polishing machine ... - YouTube

The machine is shown grinding a 300 mm mirror.How to build a tachometer:

Types of mirror grinding machines - Cloudy Nights

Types of mirror grinding machines - posted in ATM, Optics and DIY Forum: Hi to all, I am planning to make a mirror grinding and polishing machine but i have limited knowledge about these machines. Because of this i have some questions to someone who has some experience with those machines; - Some machines have fixed supportes and some of them …

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

Mirror-o-Matic and fixed position tool grinding - posted in ATM, Optics and DIY Forum: I plan on using a Mirror-o-Matic type grinding machine soon. The fixed position technique Mark Cowan uses is one I’m very interested in. Mark has spoken about this to me and on this forum, as recently as today in the thread “Grinding my 18 f/6†.

Mirror grinding - scope making

Well, that depends. Mostly on the mirror size you wish to grind, and the prices of the local market. In the US, telpe 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.

telpe mirror grinding machines - tcbasdongen.nl

telpes mirror grinding equipment,stonemill essentials aldi. telpe grinding machine optical instruments. Indeed, between 1513 and 1517, he imagined machines to grind and polish telpe mirrors, which, at the time, were made of bronze. telpes mirror grinding equipment how to make a telpe mirror grinding machine Grinding Mirror ...

Large Thin Mirror Making - BBAstroDesigns

A grinding machine relieves the labor, but is not necessary. ... April 1996, Sky and Telpe magazine starting on page 75 carries an article by Toshimi Taki, analyzing mirror cell design to support thin mirrors. ... Even first time large thin mirror grinders, ...

Mirror-o-matic

The Machines: Documentation: Information for ATMs Zip archive of Mirror-o-Matic Yahoo Groups (2000-2019) 307 Contact Dennis ...

Grinding Machine for Large Telpe Mirrors

Grinding Machine for Large Telpe 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.

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.

Amateur Telpe Making Main Page - Stellafane

Telpe Formulas and Design Comparator. This page has formulas for many telpe and mirror parameters. It will calculate parameters for two different telpe designs and compare the results for you. It provides data to help in selecting a telpe, and also provides information necessary for mirror making and testing.

tut44 Making A Mirror Grinding Tool - Asterism

Making A Mirror Grinding Tool By Allen Malsburry The average person would never think, "I can make my own telpe." ... Telpe 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.

Telpe Mirror Grinding Machine Crusher

Telpe Mirror Grinding Machine Products Suppliers. After experimenting with copper and tin alloys for the metal reflecting surface and developing his own steam-driven mirror grinding machine, this telpe was completed in 1839. Optomechanical tests and performance results of the SIRTF cryogenic optical system.

telpe mirror grinding machine - gezieninnederland.nl

Mirror Grinding Machine My Mirror Grinding Machine For a long time I've wanted to build a machine for grinding telpe mirrors Dennis Rech's MoM designs finally inspired me to just get up and do it Over the years, I'd been collecting motors, gear boxes, pulleys, etc

Mel Bartels' Amateur Telpe Making - BBAstroDesigns

A telpe mirror is arguably the most accurate surface made by human or machine. Amazingly you can grind a mirror by hand and make a telpe with simple hand tools. With such a telpe, Saturn with its rings are stunning, the Horsehead stands out in the midst of sweeping nebulosity.

Fixed post mirror grinder advice - DIY ... - Stargazers Lounge

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 and/or tool.

Robotic mirror grinding? - Cloudy Nights

This is as interesting to me even if I were to grind some much smaller mirror say 10-12 inches as it would be to scale up to whatever size blanks could ever be found in the future. I've glanced through books on telpe making and although the nature of the project interests me, spending many hours hand grinding a mirror is difficult to justify with a busy life and busy …