In this space, visitors are invited to post any comments, questions, or skeptical observations about Philo T. Farnsworth's contributions to the field of Nuclear Fusion research.Subject: Re: Vacuum Bell Jars
Date: Apr 15, 11:09 am
Poster: Jim LuxOn Apr 15, 11:09 am, Jim Lux wrote:
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>Re: Metal spinnings... if you check locally, you may find some machine shops that do metal spinning. A major cost is preparing the form, which is usually made of rock maple...the actual spinnings are pretty inexpensive, once the setup is in place. Perhaps someone could get a typical design and collect orders.
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Most metal spinning places have hemisphere forms in a variety of sizes already (it's a real common shape). As I recall, Ace Metal Spinning in Los Angeles, for instance, had hemisphere forms in a variety of sizes up to about a meter in diameter.
Call around, and I'll bet you'll find some of convenient sizes. It's those darn flanges that cost a bunch. Hmm.. I know someone with an NC mill.. Anyone have a G-code file for a conflat flange?