I have my sherline running well under LinuxCNC and I am starting to check around about edge finders and wobblers. It looks like the thing to do is get a 3/8" collet and buy to that size. I bought this to continue my education while I am building the building for a real mill, so I hate to over-buy for something I will likely only use for a year or so. 3/8" shafts can probably be used when I up-grade. Any Sherline, or other micro-mill, owners out there with start up accessories advice? Am I, once again, missing something obvious?