[TheForge] oxy-propylene, propane tips and air-arc

[Ben Barrett]

Dandy, yes indeed!  Thanks much.

On 6/23/07, Peter Fels And Phoebe Palmer <artgawk at thegrid.net> wrote:
> Ben, i have worked up 2 versions.
> 1 uses trailer hitch balls welded to the ends of pieces of pipe
> for the arms. The joint is made of 2 plates with large holes at
> each end to clamp the balls. 2 bolts hold the plates together and
> adjust the stiffness of the joint.
> The second uses the toothed aluminum folding joints found on the
> collapsable carts used to carry golf club bags....stiff and
> light. With some modification they can be made to turn on the
> shaft too....Is that what you were asking?...pete
>
> Ben Barrett wrote:
> > Awesome news, that is just the sort of thing I was hoping to hear!!
> > I can sacrifice a little bit of time to save a bunch of money, at this
> > point.  No employees, just trying to screw around and teach myself,
> > get hours  in hammering and working metal in general :)
> >
> > Both ideas sound perfect!  Know anything about multiple-burner versions,
> > even?
> > Kinda makes sense, if I wanted to make a 3-burner model that all sort
> > of pointed slightly inward, say for a convex surface or edge/tip of a
> > piece, the fuel is cheap enough, drilling a jet/nozzle or three isn't
> > too bad, and the whole head could be on a quick-release for swapping a
> > single smaller (or larger)
> > jet.
> >
> > Now that I've struck gold once, let me just ask this:
> > Does anyone have suggestions for a multi-axis third arm?
> > 6-axis, preferrably, what would be great is not quite a robot, I would
> > like to be able to lock certain (or all) joints so that a piece (or
> > tool) could be locked to a place or a single axis, or held steady,
> > then easily unlocked to be moved around.  Without locking any axis or
> > carrying much weight at all, a swing-arm lamp might be a start.
> > Yeah, I'm talking totally junk-yard, scrapper stuff here, things that
> > are prolly a waste of time to many folks on the list... heh heh.
> >
> > thanks,
> >
> > ben
> >
> >
> > On 6/23/07, Peter Fels And Phoebe Palmer <artgawk at thegrid.net> wrote:
> >> Hey Ben:
> >> Carl Jennings, may he rest in peace, Had a torch he made from an
> >> old 50s style metal blow dryer , some pipe and a propane jet and
> >> needle valve. He had it rigged so that it'd mount on an
> >> adjustable stand or could be hand held. It wasn't fast as a
> >> rosebud, but it was cheap to build and run. He'd set it on the
> >> stand, focused on the spot next to the one he was working on so
> >> when the part he was hammering cooled he could just move the hot
> >> spot over to his stake.
> >> Yes, using, say firebricks, to make a backing , corner or box to
> >> heat in,is much more efficient and quicker.
> >> Helmut Hillenkamp made a dome shaped shell lined with kaowool
> >> that had a simple burner sticking out the top. He could use it
> >> conventionally on a firebrick table or pick it up and plunk it
> >> over larger work....pete
> >
> > ...