I have an American Beauty with spindle threads that have some minor damage. I'm not sure why/how this happened, but that could be a topic for a different thread (pun not intended). Brent from Robust recommended a die from McMaster-Carr, but I'm having trouble determining which die. I purchased a die that has the specifications: 1 1/4-8 UN. The threads on my AB are 1 1/4 - 8 threads. This die is too small. On the McMaster website, they list dies as UNC and UNF, and from what I can determine, these stand for "coarse" and "fine". I purchased this particular die, since it was the only one I could find that was 1 1/4 - 8. I don't know anything about machining, and my only experience with using a tap was to make my own vacuum chucks with the Beall tap. Can anybody help me with this nomenclature on the dies? Has anybody else had experience with repairing the threads on their lathe spindle?