What are the benefits of using insert tooling?
Although the initial cost is higher, there are several real advantages to insert tooling, or tooling that uses replaceable knives. The primary benefit is that no re-sharpening is necessary. Most insert tools have at least two cutting edges per knife, while some have four. When the knife becomes dull, you simply loosen the knife (or knives), rotate them and re-tighten. This can often be done without removing the cutter from the machine or router, which saves valuable set-up time. Of course, it is important to unplug the machine before changing knives. Another key feature of insert tools is there is no diameter loss as with re-sharpened tools. This is particularly beneficial if tight tolerances must be adhered to, or if the piece being cut must exactly match the previous piece.
