I was going to hammer some heavy wall Ally tubing from round to rectangular
for each of the 8 runners.
I did one and it was too time consuming and beyond my capabity so I decided
to produce molds and make the runners in Carbon.
The original is very smooth on the ID. I worked it with flapper wheels to a mirror
finish. The OD has hammer marks etc so I'll use some filler and get to work.