In this article I will describe how I made myself an acme tap for tapping soft materials.
Step 1: Fabricate Guide Blocks
The first item I made for this project was a pair of guide blocks to hold the threaded rod stock with. I made mine uniform, and square, then drilled holes out of the center of each. I used some phenolic cellulose material I had on hand, I am sure other materials are equally as suitable to use.