joy of mirror making rough grinding

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Making a homemade mirror grinding machine

Mar 06 2006 0183 32 The larger one is for grinding and polishing mirrors and is also used at higher speeds to centrifugally cast resin mirrors an experiment I am playing with in my spare sic time The smaller mirror is used for power wrapping epoxy impregnated fiberglass around mandrels for making tubes and cylindrical components for open truss...

mirror grinding parabolic in slovakia

Joy of Mirror Making Rough Grinding Grind with the tool on top in a to and fro pattern overhanging each end by about 16 the mirror diameter After a half dozen strokes take a step to one side and repeat Then spin the tool on top in the opposite direction...

Rough Grinding a 20 Quartz Telescope Mirror on the Fixed

Mar 07 2010 0183 32 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...

Is grinding a mirror really that hard

Mar 16 2002 0183 32 The knack of making a mirror is an acquired ability You get the knack by doing The qualities most important are patience perseverance and the ability to learn from mistak I admire your enthusiasm and desire to make a large dia mirror for your first mirror but I think it would be a mistake Make a 6 mirror first...

Ed Grinds a Mirror

-Ed 5/29/00 Chapter One Rough Grinding May 28 2000 I arrived on a cool Sunday afternoon in May and started grinding with five other club members in a local barn Right away there was pressure on me I had missed the first two-hour grinding session and everyone was well ahead of...

The Joy of Mirror Making Parabolizing

This is the beginning of mirror making wisdom Wisdom in mirror making is not learned it is absorbed by constant observation and thought over a long period of time Luckily for the first time mirror maker the joy of taking the first step is as powerful as the satisfaction of an experienced mirror maker finishing a difficult mirror...

Making my own fixed post mirror grinding/polishing machine

Oct 15 2012 0183 32 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...

how grinding wheel is made

Joy of Mirror Making Rough Grinding Motorized grinding wheel on the end of along boom that is anchored that is moved back and forth across the mirror face Diamond wheel grinder rubbed against the mirror face The first approach is almost universally used I recommend the ring tool method as it rough grinds in half the time as the tiled tool...

Grinding my first 6 f/8 Telescope Mirror

Grinding my first 6 f/8 Telescope Mirror This video shows a few initial stages of making a primary mirror for a 6 f/8 telescope I m a newbie so bear with me in my ignorance as a first timer making...

Joy of Mirror Making Introduction

Rough Grinding Unless the mirror comes pre-generated the initial curve will have to be ground into the mirror A ring tool of half the diameter of the mirror used on top of the mirror s flat face with the coarsest grit will rapidly grind a spherical curve into the mirror Grinding a 6 inch 15cm mirror to F/28 using a ring tool Mirror...

Making a Mirror grinding Polishing machine

Mar 16 2015 0183 32 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 105 or max 12...

The Joy of Mirror Making Mel Bartels Mirror Grinding

Wisdom in mirror making is not learned it is absorbed by constant observation and thought over a long period of time Luckily for the first time mirror maker the joy of taking the first step is as powerful as the joy in taking the next step Above all take the steps walk forward - observe and learn...

Rough Grinding of a Telescope Mirror Guy s Math Astro Blog

Dec 15 2014 0183 32 The ground-up glass and grit will make a muddy slurry which will eventually slow down the grinding process C Try not to wrap your hands around the edge of the mirror towards the edge if at all possible This will heat up the edge of the mirror making it expand which can cause bad unexpected results...

Stellafane ATM Rough Grinding

This page describes the rough grinding process Before You Start Use this checklist to make sure you are ready to start rough grinding You have selected a mirror diameter and focal ratio and have use these to calculate a target sagitta You have a way to measure sagitta You have an appropriate size mirror blank you have selected a surface to grind and you have beveled the edge...

Amateur Telescope Making Main Page

Much is also unchanged - mirror grinding techniques are very similar to those written up by Porter and Ingalls in the 20 180 s and 30 180 s Many amateur astronomers still choose to fabricate their own instruments for the pride of accomplishment the gaining of knowledge and the insurance of quality...

Telescope Making Rough Grinding a 125 inch primary mirror

Aug 03 2009 0183 32 In this video I continue the rough grinding of the primary mirror for my Buchroeder Quad Schiefspiegler telescope I have decided against the advice of my friend Dick Parker to go with a...

Make your own telescope mirror Rough grinding

Apr 03 2020 0183 32 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...

Joy of Mirror Making Fine Grinding

The goals of fine grinding are to prepare the curved mirror face so that it is ready for polishing and figuring and make any adjustments of the focal length Previously in rough grinding we deepened the center of the mirror s face either by grinding with coarse grit and a tool slumping in a kiln over a mold or purchasing the glass pre-generated...

making a mirror grinding machine

Mirror grinding - scope making 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 mirrorIt is cheaper it is softer and grinds faster needing less abrasives and with these small sizes the low expansion glass like Pyrex...

Telescope Mirror Making Part 3 Rough Grinding

Sep 23 2012 0183 32 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 second...

mirror grinding diamond curve generating machine

Joy of Mirror Making Rough Grinding BBAstroDesigns The Joy of Mirror Making Mel Bartels Rough Grinding Grinding the curve into the mirror face can be done by one of the following approaches Motorized grinding wheel on the end of along boom that is anchored that is moved back and forth across the mirror face Diamond wheel grinder rubbed against...

Grinding my first 6 f/8 Telescope Mirror

Apr 24 2018 - Grinding my first 6 f/8 Telescope Mirror - YouTube This video shows a few initial stages of making a primary mirror for a 6 f/8 telescope...

Joy of Mirror Making

The Joy of Mirror Making Mel Bartels Introduction Rough Grinding Fine Grinding Polishing...

10 Telescope Making ideas telescope diy telescope

Dec 25 2016 - Explore James Miller s board Telescope Making on Pinterest See more ideas about telescope diy telescope astronomy...

Stellafane ATM Mirror Making Myths

Mirror Making Myths Mirrors can only be made with Special Precision Equipment in Expensive Factories or Labs Not True Telescope mirrors can be made in your kitchen basement or garage with nothing more than the mirror blank and a second piece of glass called the tool to rub the mirror against with an abrasive grit and water slurry...

length of grinding time

Joy of Mirror Making Rough Grinding The depth in the center of the mirror is the mirror s sagitta The sagitta determines the mirror s focal length and focal ratio There is plenty of time to contemplate the desired focal length while rough grinding Here s a table of depths across a variety of mirror diameters and mirror focal ratios...

Telescope Making Rough Grinding a Primary mirror for a 12

Aug 01 2009 0183 32 In this video I continue rough grinding my 125 inch primary mirror for my Buchroeder Quad Schiefspiegler The radius of curvature will be 300 inches when c...

Stellafane ATM Materials Tools

Grits Pitch Grits and Polishing Compound are the consumables in the mirror making process Grits typically of Silicon Carbide or Aluminum Oxide in various grades are used as an abrasive between the mirror and tool to grind the glass Pitch is used to make a soft conforming pitch lap for polishing and figuring It is used with a Polishing Compound such as Cerium Oxide which is actually...

Mirror grinding Telescope Telescopes Mirror

Jun 7 2018 - telescope making mirror grinding homemade tripod eyepieces astronomy...

Rough Grinding a 20 Quartz Telescope Mirror on the Fixed

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 abrasi...

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