Making Wooden Threads Homemade Tap and Screw Box

Ever since making a tap and die a couple of years ago to make 1 threads I ve always wanted to make bigger threads. I made the die for that one from a nut with the cutting edges filed into it, with this new one I make a screw box with a homemade cutter. The nut for the scaffold screw is a very sloppy fit so that wouldn t work as a die because the screw that would be made with it would end up too thick and wouldn t fit the nut made from the tap. Recently when I made my leg vice I used a scaffold levelling