On Sat, 03 Nov 2007 22:53:00 -0700, Buy_Sell
wrote:

Anyone spinning metal? I just got these DVDs and thought that they
were excellent.
http://www.metalspinningworkshop.com/

I have the tooling for it, and have tried it a few times, but it's not
as easy as you'd hope, at least with drag tools on a wood lathe.

The main problem I have had is with scalloping on the outside edges as
the part is being formed. Recently, someone posted a video on You
Tube that showed it being done, and it appears that the resolution to
this might be to have a secondary roller behind the blank that keeps
the metal from doing this- but I haven't had the time to try that out
yet.

If you're using drag tools, make sure they're smooth and
mirror-polished, and then make them smoother. That'll work good for
copper and brass, but I've never got aluminum to turn out without
galling.

Best bet is probably to make roller tools- I'm sure there are guys who
can make good parts with the old drag tools, but it's not easy.