On Dec 12, 3:52*pm, Bob Engelhardt wrote:
Skip down to 3:00http://www.youtube.com/watch?v=m_-iPpEuWRA

I don't know if, technically, they are _slip_ rolls, since I don't see
how any of the rolls would open. *Still interesting, though, & much
simpler than most. *Especially using the cranks & link in place of gears
or sprockets & chain.

The action is somewhat different than the usual slip rolls in that the
material is not pinched between drive rolls.

Is there a specific name for this type of roll?

Bob

Would annealing the rim have helped?
Karl