Making Mirror glass
Category: Science > Technology
Asked by: 8522-ga
List Price: $10.00
16 Jan 2003 09:03 PST
Expires: 15 Feb 2003 09:03 PST
Question ID: 144245
How is mirror glass manufactured (from scratch)?
Re: Making Mirror glass
Answered By: ragingacademic-ga on 16 Jan 2003 19:34 PST
Dear 8522, Thanks for your question. First, let me request that if any of the following is unclear or if you require any further research please dont hesitate to ask me for a clarification. I have found several sites that can be of assistance The first explains how to make a mirror from a sheet of glass by silvering http://www.citycollegiate.com/dblock3.htm This page links to a movie that will walk you through the process http://www.alanmacfarlane.com/glass/birm6.html Heres a great tutorial from makestuff.com http://www.make-stuff.com/formulas/mirrors.html Heres another excellent tutorial http://dgmlnx2.sun.ac.za/personal/astro/telemake/silver.htm Looks like these guys will sell you a kit that makes the whole process a lot easier http://www.cometobuy.com/elitefin/elite_mir_sys.asp?number=38 But if you still want to go absolutely from scratch heres another tutorial that may help http://bmaxey1.tripod.com/index_fs.htm The following site also looks pretty thorough, even scientific to some extent http://users.ticnet.com/mikefirth/mirror.htm If you are interested in finding additional, similar sites try the search strategy below on Google. There were almost 3,000 hits, so there may be more useful sites out there. I hope this response adequately addresses your request. Please let me know if you are in need of additional information concerning this query. Thanks, ragingacademic-ga Search Strategy: mirror glass silvering
Re: Making Mirror glass
From: neilzero-ga on 16 Jan 2003 19:13 PST
Quality glass for mirrors should have very little color, which would tint the image slightly. This means the trace impurities in the ingredients must be controlled carefully. Quartz sand = silicon dioxide is the principle ingredient with (I think) some calcium oxide and some sodium oxide. The carbonates can be used instead of the oxides of calcium and sodium, but some carbon dioxide gas bubbles might spoil an occasional mirror. Both surfaces of the finished glass need to be parallel with high precission to obtain a correct image. I believe this is acomplished by grinding and polishing plate glass. Neil
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