[TheForge] Bar Twister

Tue Aug 26 00:10:00 2003

I saw on one of the UMBA tapes recently a great idea Ive got filed away for
real soon, using an air impact wrench to do the twisting, some of them put
out amazing torque and Ive already got the jig so it should be fun, easy
reverse twists too...

----- Original Message -----
From: "R.C.Mundt" <[email protected]>
To: <[email protected]>
Sent: Tuesday, August 26, 2003 1:16 PM
Subject: Re: [TheForge] Bar Twister

> I made a real similar setup, turn mine w/ a 24" pipe wrench.
> I thought about looking for a cheap lathe chuck for the next model, but
the
> different holders aren't that tough to make, the more I think about it the
> next model will be motorized also.
> Randy Mundt
> ----- Original Message -----
> From: "Ed F" <[email protected]>
> To: <[email protected]>
> Sent: Sunday, August 24, 2003 6:11 PM
> Subject: [TheForge] Bar Twister
>
>
> > I posted a picture of my little bar twister.  I have to match some
> security
> > grating and I thought this thing would make life a little easier.
> >
> > This is model a001.  The inserts for the bar come out so you can make
> > different ones for different kinds of stock.  I used schedule 80 pipe
that
> > kind of fits inside one-another.  It's sloppy.  I made a wrench that
grabs
> > the 3x3 square plate for twisting.
> >
> > Overall, I'm OK with this first setup, and it will work until I make a
> > different one (if I ever need to do a bunch of twists again).  I can
> adjust
> > the twist length easily and very tight if needed, and lift the twisted
bar
> > through for flat areas.  Each end has a slot that the bar can be lifted
> out
> > of.
> >
> > You have to slide the fixed end down to extract the die sometimes.  It
can
> > jam itself in the jaw a bit.  I did try a really short flat section
> between
> > twists once and end up getting the twisted stock so close on both sides
of
> > the jaw I had to cut it free with the chopsaw.
> >
> > For the next iteration I thought I may use a home-made 2-jaw chuck made
> with
> > big opposing bolts, but that's alot of screwing around.
> >
> > Ed
> >
> >
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