I want to make my own mirror. Please help.

Can someone please tell me where to find the best detailed information on grinding and polishing mirrors? And what would be the best kind of glass to use as a test run? I saw an ad for some large plate glass blanks for a pretty low price. Is plate glass better for 1st attempt or is it better for a "good" mirror? I am really struck with this desire to make my own mirror and I'm not sure why, but I can't stop thinking about it. If anyone can help please do.
May the clouds part when you exit the door with your scope betwixt you hands.

Nate

Hello:
Without a doubt, the bible of mirror making is "How to make a telescope" by Jean Texereau, which is available through Willmann Bell publishing. If you want to make a mirror, this book is worth every penny. Willmann Bell also sells mirror making kits, with everything you need. I think are a bargain since they provide the novice mirror maker quality materials that are hard to find in small quantities separately. Texereau's book is nearly 50 years old, so while all of his techniques are still very good, some of the materials he uses can be hard to find today. Get it, read it, and use it. When I made my mirrors I had it open next to me as I was working away.
For your first mirror, I'd recommend sticking with pyrex for the reason that it is more thermally stable. This can help make a better mirror not just because it is more stable as your mirror cools down at night, but also as you polish. Polishing generates a lot of heat, which you don't really notice since the water in the slurry soaks it up, but still a lot of heat is there. As the glass warms up during polishing, the pyrex will expand less, making it easier for you to get a good figure on your mirror. With plate glass, you have to be very careful. A warmer area will expland more, which will then tend to be polished out, which will leave a divit in your mirror when the glass cools. You also have to wait longer between polishing and testing to ensure that the mirror has cooled.

Cheers
Mike Connelley
If you don't learn patience making a mirror, you never will

Nate;
I recommend that you find a local
astronomy club near your area.
There are several good books out
there to buy for good info. ie
How to make a telescope by
jean texereau.

hope this helps

clear skies

ed

Kreig & Berry's book warns that if you grind a mirror you will forever become a mirror maker. I can attest to this. Good luck and clear skies.

Bill