That Lie Neilson plate is a multi size dowel die whereas you can make your own very easily like carpenters have done for centuries.
Drill a hole in a steel bar approx 1/4" thick to the required dowel diameter then turn this die over so the burr is pointing up to cut the wood.
Put a chamfer on each piece of wood so it can start in the hole then with the die well supported hammer the wood through the hole.
You now have a dowel of the required size.
Because the wood is being compressed slightly when passing through the die the hole is often drilled slightly smaller.
i.e. 31/64" for a 1/2" dowel.
Drill a hole in a steel bar approx 1/4" thick to the required dowel diameter then turn this die over so the burr is pointing up to cut the wood.
Put a chamfer on each piece of wood so it can start in the hole then with the die well supported hammer the wood through the hole.
You now have a dowel of the required size.
Because the wood is being compressed slightly when passing through the die the hole is often drilled slightly smaller.
i.e. 31/64" for a 1/2" dowel.
