On Wed, 29 Nov 2006 13:38:26 +0000, The Natural Philosopher
wrote:


Think its broadly proportional to diameter squared..
I.e. the load ends up at a greater diameter spread over a greater area..

Ok ..

Hard steel drill shaft is the least resistant to bending..usually
stainlesl too.

And a total pig to cut. No saw will dio it - needs a grinder.

Tool steel or Stainless (I cut the 3/8 ss bar with a blunt hacksaw in
about 8 strokes?)?

All the best ..

T i m