I saw this on the How It's Made the other day. There's lot's of youtube videos for Metal Spinning. This one shows both CNC spinning and hand-tooling.
Yes, metal spinning is a pretty cool process.
I have a buddy who owns a metal fab shop & they do spinning on occassion.
I believe that copper "stub outs" / "bullets" are made via the spinning process.
cheers Bob
I enjoy these shows on the cable Science channel. Always learn something interesting.
We did that in metal shop back in high school in the mid 1960's & it was both easy and amazing. I have a lathe, maybe I'll give it another try one day.
Tried it on my lathe a while back, but limited success. The big problem is the need for a super heavy duty tool rest as the YouTube vids show. Aluminum might be easier, but the copper I tried (0.030") was too mean to make more than a small bowl shape depression even after re-annealing with propane torch. Some 0.010" copper was overly flimsy for the forming buck I had cobbled up. Still, with better tooling and maybe more HP it looks like it could work. Maybe later...
Joe
Eric in North TX wrote in news:07af4cd1-4e46-4e29-858b- snipped-for-privacy@f21g2000prn.googlegroups.com:
We didn't. But sometimes we had metal stock.
I have watched the automated one before. The hand-tooling one is cool like you said. That I had not seen.
Colbyt
Aye, I noticed that rest also. The fellow doing that operation looked like he had been doing that for awhile, which also helps.
Jon
Search youtube for Metal Spinning.
Lots of hits, mostly hand-tooling, some jigs, etc.
If I ever get a lathe...
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