A quick cleanup with 400 grit sandpaper and mineral spirits to clean the irons.
A high-level, not proportional, plan of how the roll will be made. The entire thing will be made from 2 layers of antique canvas my wife stashed away ages ago. The roll proper will be 25cm by 25cm, with a 14cm flap covering the tangs and a 7cm side flap.
Main body and side flap cut to size (I actually made the side flap too small and redid it)
The side flap stitched to the main body