On Saturday, July 29, 2017 at 10:59:19 AM UTC+1, Peter Fairbrother wrote:
When I was a lad it was cold drawn on bar drawing machine or a draw bench. On of the factories in our group when I first started work was called Sankey Wire Mill in Warrington. It closed down in the early 60's.
On Thu, 3 Aug 2017 16:41:16 +0100, Peter Fairbrother
I don't know what the A/F means but you can certainly draw hex bar
from 6mm tin bronze by hand. Years ago I made jewelry and drew a lot
of special shaped wire from sterling silver and "German Silver", which
of course has no silver in it. Though I didn't draw any hex as large
as 6mm I did draw ribbon which had roughly the same amount of surface.
Starting with round wire and pulling through many different holes. At
least 30 holes. Even the sterling silver would get quite hard and
resistant to more deformation fairly quickly so frequent annealing was
required. Pulling the wire through the die holes quickly worked better
than a slow pull.
I've certainly run into the other options mentioned and used drawing
dies occasionally but you might want to look at "turks heads" as one way
to produce sections. I think for small scale use you would be best off
with draw plates and a draw bench of some sort.
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