"Bob Moody" wrote in message

I turned one disc to the max diameter my lathe would take. Then turned a
second set of discs, same diameter but different size holes at the center,
padded the hole insides with rubber. Glued a piece of scrap wood to the
bowl bottom, fastened that to a face plate, turned the outside and inside
and finished them. Removed the face plate,then put the bowl on my solid
disc, picked the second disc of appropriate diameter and fastened it with
matching bolts to the base disc, turned away the scrap wood and finished
the
bottom. Just finished two today and it works like a charm. If you can
find
that wood article, you should read it first. There are probably more
details than I am giving here.

This sounds like the same technique Judy Ditmer describes in her book,
"Basic Bowl Turning." (Schiffler Pub.) I haven't tried it yet, but it seems
like a reasonable method for fabricating a reverse chucking apparatus that
will work with many different bowls of similar diameter.

Max