[TheForge] Totally Twisted

Sat Sep 13 19:30:02 2003

Ries,

Thanks for putting up the pictures! Nice work!!

Bob Schade
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>A while ago we were discussing twisting machines and their application. Dave
>M mentioned he was much more interested in seeing the work than the machine
>what did it.
>I have just posted at the photo access site, in the Twister file, a couple
>of pics of the benches we just installed at the new Snohomish Public Library
>in Snohomish Wa.
> These benches are 9' long x 4' tall, galvanized steel. They have a forged
>framework of 3/4" round, then curved sheets of plasma cut 1/8" plate, behind
>which is a hexagonal grid of twists and hex plates.
>The twists, of which there are over 300, were all done cold on my Hebo- a
>cnc german ornamental iron machine that twists up to 1 1/2" square cold. The
>twists were all done by my sons- mostly by Torque, who is 9. He could do
>about 50 an hour- they are 3/8" square, 12" long. Dont know if it has
>anything to do with his name, but he loves twisting stuff. He loads the bar,
>and hits the foot pedal, and a preprogrammed sequence starts- it twists it
>740 degrees, then back 20 to end up with a 720 degree twist. Supposedly this
>overtwist then untwist helps account for springback, and gives you a
>reliable 720 end product. It seems to work, as the ends of the square come
>out aligned. 
>After twisting, they were cold bent on the hossfeld, then hot upset, or
>rivetted, to the 3" hexagonal plates. The hex plates were plasma cut, cold
>punched on the ironworker, then had alphabet letters hot stamped in them,
>and the holes hot drifted.
>
>So its kind of a bastard mix of forging and fabricating. a layer of forged
>work, a layer of fabricated work, and another layer of forged work.
>
>Ries
>
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