I picked up some inserts for use in a Warmoth neck. I've used these before on basses (this build is a guitar), but did them when I was younger, more brash and without much forethought. They both turned out well, but here's what I'm wondering: With a knife thread insert, is it better to simply drill and allow the threads on the insert to cut into the wood, or is it better to tap the hole first so that the threads don't have to cut into as much wood? These are the inserts in question: 10-24 Stainless Wood Knife Thread Insert | Fastenal There's a misprint on the specs. It says that the external thread size is 0.35" and the drill size is 0.375". It doesn't take a rocket scientist to understand that the drill should probably not be larger than the external thread diameter. I checked with EZ-Lok (the manufacturer) and the external thread size is actually 0.453" (29/64"), but they couldn't offer me much on which tap would work well with these, which lead me to my question here. So luthiers, or woodworking pros: Would you pre-tap the 0.375" hole, or would you simply drill it and allow the threads themselves to do the tapping as they were inserted. If you would pre-tap, which specific tap would you use, and would you go along with Fastenal's suggestion of a 0.375" drill as well? Thanks!