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how round?

Started by Mark229, 07/23/2006 05:12PM
Posted 07/23/2006 05:12PM Opening Post
My local glass co. has some plate that is 3/4" thick, wide enough for a 9-91/2" mirror. It will have to be hand broken to shape, cleaned up on a belt sander in their shop.
My question: How close to perfectly round does a mirror need to be to work properly? I'm expecting that we could get pretty close using a circle made with a sharpie and the belt sander, but...
What do you think?
Posted 07/23/2006 06:23PM #1
Mark,
You can get it round enough to work. The real problem will be the edge and the anneal.

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