SJE guitar neck profile bits may be the perfect tool choice for the small shop guitar maker who wants to turn out consistently profiled necks, but who doesn’t have the space, or the budget for a CNC large enough to carve necks.
You still need to carve the headstock and heel transitions by hand, but the time savings and the ability to create a consistent profile, and neck thickness makes the relatively small investment in the bits (and the time jigmaking) well worth the effort.
They can be used in a router table to shape fender style bolt-on necks, or in an overhead (ie pin router) set-up to make necks with a heel , or an angled headstock.
For safety during overhead routing, I highly recommend building a neck holding jig with a wide base to stabilize the workpiece and to force you to keep your hands well away from the spinning bit.
For the record, these are big bits, not at all like the pattern bits, small roundovers or spiral bits that we tend to use in lutherie and need to be run at significantly lower speeds to be safe.
Follow the manufacturer’s speed recommendations, and take small bites.
Rough faceting your blank in advance to minimize the amount of wood you need to remove will help reduce the possibility of tear out; especially in figured woods or woods with interlocking grain like Mahogany or Acacias.