At least I hope its the right forum.
A short while back on a forum ( hopefully this one) someone
posted a way of making a tool for turning round copper wire into D shaped wire
by drawing it through like a draw plate, but if I remember right this draw plate was made in 2 pieces.
One part has a hole drilled in it which was then milled down to leave just a semi circle and the other part was flat
and was bolted across the bottom of the semi circle to make the D shape
Was it on this forum that I saw it and if so can anyone point me to it please?