[TheForge] helical railing calculations

[Andy Vida]

Ries Niemi wrote:
> 
> Yes, Bruce- definitely.
> I have the ability to roll curves in one plane with a few different
> tools. And I have the theoretical ability to roll helixes, with a
> little modifications to my ring roller. But flat curves are easier and
> better and involve less swearing.

	One of my biz partner's friends in Buckeye had a very cool
	hydraulic ring roller toy.  Came to the shop one say and I
	stood awhile as one of his guys rolled 1/2 x 6 x about 24'
	the hard way.  Slow and steady, but the arcs were quite
	perfect.