Hozan spoke threader

Someone told me the hozan spoke threader is only for threading a few spokes. Is this true? Why can't it do many spokes? is it because the cutting blades dull easily. What is something that could thread many spokes. I want to build complete wheels.

 

This is the industry standard, but it ain't cheap. http://www.philwood.com/webcatolog/page20.htm

 

For strength and durability, rolling the threads is considered to be superior to cutting the threads. The Phil Wood threader rolls the threads. Keep in mind that threading your own spokes pretty much rules out using butted, bladed, or ovalized spokes for building your wheels.