Some photos. Grandad's tools were just as I remembered, a diesel-smelling clutter of small hardware and little homemade metalworking tools interspersed with Copenhagen tobacco cans containing electrical tape and other little containers. This is only a small sample. There are a ton of little files, but nothing really for woodworking, which fits my memory of his hobbies. He probably made this toolbox.
Untitled by
Darth Lefty, on Flickr
Then a couple of the miter pattern in action. It doesn't perfectly work because the tube isn't really cylindrical, it's conical, bigger at the nodes. I relieved the back side of the pattern a little by making little cuts in it. Canaboo is right, the going is slow with this dinky rasp that allows only 3" strokes. It's not impossible, but to do ten of them I think I'll find another way.
Untitled by
Darth Lefty, on Flickr
Untitled by
Darth Lefty, on Flickr