The canvas for the tool box lid is now finished.
A single stitch run has been run along all sides, beneath where the leather strip will go, to keep the edges fairly straight. Before it's completely tacked in place, I'll iron the edges and apply some spray starch to help the edges retain their shape.
Incidentally, I have not made any attempt to clean inside of the box itself, but did clean inside the lid. Sandblasting isn't just for metal! The lid will need another blasting before reassembly. It has some PVA glue residue to come off.