Mated pairs of threads, such as those found on nuts and bolts, are cut with a "tap and die." While different type of taps and dies are used for different types of projects, the procedure is virtually identical; a tap fits into the female part of the pair whereas a die is inserted over the male section. For woodworking projects a wood die, also referred to as a wood thread-cutting tool, is used to make screw threads on objects such as broom handles.
Wrap the towel around the middle of the broom handle.
Place the middle of the broom handle, wrapped in the towel, into the vice. Close the vice until the broom handle is held securely. Do not over-tighten the vice or you risk cracking the wood.
Place the die over the bottom end of the broom handle. Grasp the handles of the die and rotate the die clockwise, twisting the die down onto the shaft.
Continue twisting the die onto the broom handle until the die has cut the threads to a sufficient depth to accept the broom head.