Cutting wood threads with a tap.

[dzcues]

Wow, I am gonna make him one rich fellow!

Kelly

If you keep making him smile, he might settle for a Yugo.

 

[Michael Webb]

Cutting wood threads with a tap.
There's your problem.

Threading with a tap takes a little getting use to, power feeding can be a downfall on certain types, like fine threads and acme's. What's the rush. I showed Tony Z some 3/4X16 threads I did on a dowel using a standard metal die, I left the O.D. about .745, they looked pretty good.
Just my humble opinion.