[TheForge] bar twisters

[lama]

>
>
> > Ed- Dave's twister applies pressure thru the large spring which pushes
the
> > pipe clamp carriage away from the motor.
>
> I was wondering how that gets accomplished.  Seems like you'd pull the
> spring back and clamp it down after the bar is chucked up.  Dave, do you
use
> a come-along, hand force, ... etc?
>
> Ed
---------------------------------------------------------------------
Ed,
1. chuck up the piece.
the vice is connected to the far end of the spring mount via a threaded rod.
2. tighten the nut on the front spring mount.
this compresses the spring.
3. clamp the front spring mount to the rails (old vice-grips)
4. loosten the nut on the threaded rod.
this allows the spring to push the rear mount, thus pulling on the threaded
rod,
thus pulling on the vice mount (which of course is floating) thus pulling
tension
on the work piece.