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Fixed Post Mirror grinding Machine

Building a fixed post mirror grinding machine ...

2019-8-19 · Re: Building a fixed post mirror grinding machine Post by Kanadalainen » Fri Aug 16, 2019 5:17 pm Update: The 6061 aluminum turntable top was ready this morning and I

Making my own fixed post mirror grinding/polishing

2012-10-15 · Page 1 of 2 - Making my own fixed post mirror grinding/polishing machine - posted in ATM, Optics and DIY Forum: Hey guys. Im thinking of making my own fixed post mirror grinding/polishing and curve generating machine. Ive got loads of questions regarding the design so Ill just start firing away Do I need an eccentric moving tool to be able to polish a mirror spherical?

Fixed post mirror grinder advice - DIY Astronomer ...

2011-11-1 · 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

Building a fixed post mirror grinding machine - Page 2 ...

2019-10-13 · Re: Building a fixed post mirror grinding machine. Update summary: Lots of work to get to this point. Things I need to probably change or fix: My gearing of the DC motor. I will need a slow speed for polishing (5 rpm), and faster speeds for hogging out and fine grinding (15- 30 rpm), so likely need to think about adding a gear reduction.

Mirror Grinding Machine

2015-8-14 · 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.

jeffbaldwin.org

2015-9-7 · 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 1/8 diameter of the mirror, and is fixed in this position.

Fixed post mirror grinder advice - Page 2 - DIY Astronomer ...

2018-10-29 · It takes me 2 hours or so to clean up a 20" mirror. That 'cleaning up' has all to do with this ugly looking machine... For smaller mirrors I use this one. Link to post Share on other sites. Gina 21,980 Posted October 29, 2018. ... Fixed post mirror grinder advice IPS Theme by IPSFocus; Theme . Default Simple Theme . SGL Responsive - v4 (Default

Mirror Grinding Machine | Hackaday

2006-9-26 · Post navigation ← Rebuilding Tube Amps. Rotary Subwoofer → 6 thoughts on “ Mirror Grinding Machine ” Phugedaboudet says: September 27,

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

2009-3-25 · 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

Fixed post mirror grinder advice - Page 2 - DIY Astronomer ...

2018-10-29 · It takes me 2 hours or so to clean up a 20" mirror. That 'cleaning up' has all to do with this ugly looking machine... For smaller mirrors I use this one. Link to post Share on other sites. Gina 21,980 Posted October 29, 2018. ... Fixed post mirror grinder advice IPS Theme by IPSFocus; Theme . Default Simple Theme . SGL Responsive - v4 (Default

Mirror Grinding Machine

2015-8-14 · 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.

Fixed Post Grinder/Polisher Build - ATM, Optics and DIY ...

2019-9-20 · Page 1 of 2 - Fixed Post Grinder/Polisher Build - posted in ATM, Optics and DIY Forum: Hey all: As my winter project I have a pile of glass Id like to work my way through (a couple of 6, a couple of 8, a 10 and a 12) all with the ambition of working my way up to large thin meniscus mirrors. Ive hand ground/polished an 8 and a 9 previously, so Id like to construct and learn how to make short FL ...

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

2016-9-3 · Fixed post mirror making machine - posted in ATM, Optics and DIY Forum: I posted about this before a while ago-maybe a year-it has taken a lot of time to make the machine and hog out my mirror. I am making a fixed post mirror making machine. So far I just have just made the rotating turntable. It rotates at around 45 rpm. I can change this to around 25 rpm by using a different pulley.

Waite Research Telescope Mirrors :: Home

2010-4-29 · Fine Grinding a 20" Quartz Telescope Mirror. Rough Grinding on the Fixed-Post Mirror Grinding Machine. Hogging the Curve on a 20" f/4.5 Quartz Telescope Mirror. Astronomy magazine names Waite Research's Renegade telescope a top astro product of 2015. The 20" Renegade telescope offers fabulous viewing without climbing a ladder.

Astro-Tel - Mirror grinding machine

2001-4-12 · 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

Making a Mirror grinding & Polishing machine - ATM,

2015-3-16 · Page 1 of 5 - Making a Mirror grinding & Polishing machine - posted in ATM, Optics and DIY Forum: Hello, I am on the half of the way to make a mirror grinding machine inspired by original M-O-M design. I made the pulley arrangement such a way that, both the turn table & eccentric spins at 50 RPM fixed. I wont go for making mirror bigger that 10.5 (or max 12).

Types of mirror grinding machines - ATM, Optics and DIY ...

2018-11-16 · 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 have a prestaltic moving arm,

Large Thin Mirror Making - BBAstroDesigns

2012-7-3 · In addition, a great deal of money will be saved: a finished 24" scope will set you back $7,000; grinding your own mirror and building the mount yourself will cost you $2,000. Amateurs have made mirrors up to 41" by hand. A grinding machine relieves the labor, but is not necessary. A 24" is the largest you can comfortably do solo.

Large Thin Mirror Making - BBAstroDesigns

2012-7-3 · In addition, a great deal of money will be saved: a finished 24" scope will set you back $7,000; grinding your own mirror and building the mount yourself will cost you $2,000. Amateurs have made mirrors up to 41" by hand. A grinding machine relieves the labor, but is not necessary. A 24" is the largest you can comfortably do solo.

Parabolizing a Telescope Mirror - BBAstroDesigns

2021-7-20 · Mirror makers turn to sub-diameter laps for larger faster mirrors. Deep parabolas can be carved out and zonal irregularities attacked. However, surface smoothness is an issue. A smooth mirror surface along with deep parabolas can be achieved with full-sized or over-sized pitch laps by varying the pitch lap's area of contact.

Mirror grinding - scope making

2007-2-13 · A good starter size is the 150 mm (6") mirror. A 200mm (8") will also work. Most ATM books and websites recommend a Pyrex® mirror blank, but in my opinion, annealed plate glass is better for this first, "learn and practice" mirror.It is cheaper, it is

Grinding Machine: Types, Parts, Working & Operations

Working principle of Grinding Machine: The working principle of a grinding machine is quite easier to understand.. In a grinding machine, there is an electric motor which supplies the motion power to the grinding wheel with the help of a belt and pulley.. So when we start the electric motor the motor rotates at a certain rpm (150-15000 RPM, it may change according to the types of grinding ...

Optical Post Assemblies - Newport

Optical Post Assemblies. Optical posts and pedestals are used to precisely control the elevation and location of optical mounts on a breadboard or optical table.

Hubble's Mirror Flaw | NASA

2019-11-25 · Once Hubble began returning images that were less clear than expected, NASA undertook an investigation to diagnose the problem. Ultimately the problem was traced to miscalibrated equipment during the mirror's manufacture. The result was a mirror with an aberration one-50th the thickness of a human hair, in the grinding of the mirror.

Grinder - TIMEMORE COFFEE

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External mirror shake fixed? | Toyota RAV4 Forums

2019-7-25 · Joined Aug 4, 2019. ·. 946 Posts. #4 · 23 d ago. myang001 said: Toyota offers a fix to the outside mirror shaking but not a perfect fix since it is a design/material issue. The fix could be accepted by many owners (without complaint after fix.) I have drive's side mirror fixed since the passenger side mirror shaking not that obvious.

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

27 Things That Got "Fixed" In Hilarious Ways

2021-8-14 · 27 People Who "Fixed" Things In The Most Hilariously Brilliant Ways Possible. Sometimes the "wrong" way is 100% the "right" way. by Mike Spohr. BuzzFeed Staff 1. This person who was tired of ...