Agreed. Thread wires are a royal pain to use at the lathe. I break out the thread wires for inspection purposes, and I also have a set of the little plastic keepers from Flexbar that hold two of the wires. Using thread wires over a chip pan is asking for disaster—you can avoid that by putting a tape flag at one end of each wire.... I find thread mics faster, simpler and easier to use than thread wires, especially when checking fits while the part is on the lathe.