Hi Al! I have an old photocopy of this variant and wonder if you can use a styrene tube for the middle. You could take a long piece of strip styrene and using the edge, tack it on with CA to one side and turn it over and over around the tube until you get the proper revolutions/length for the blade. From there, it should be just glueing in place. Can't remember if the end tapers, but if it does, you can fill the one end of the styrene with a plug and sand smooth. As for the blade, if it has to taper, you can do that with an X-acto. Don't know if this post will help you, I am going to have to dig up that old photocopy pic again and refresh my memory....