I completed the machine drawings for the 3 pieces that make up the rear support brackets!
I've seen a lot of videos where the welder draws a circumference profile on paper and then wraps the paper around a tube and traces the profile with a sharpie. Then just grinds down to the mark.
I did the same thing virtually by converting my tube shape in Fusion360 into a sheet metal flange and unfolding it into a cut out then laying out the shape in the drawing at 1:1 scale. Now when the machine drawing is printed, we can: cut out the profile, wrap it around the tube to be cut and trace the desired profile onto the tube with a sharpie. Hopefully, it will make creating the bracket tubes a bit easier.
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