How to Read a Rotary Engraver Spec Sheet

Thinking about buying a rotary engraver for marking tools with inventory IDs? The spec sheet can be misleading. This episode breaks down what actually matters: collet size, runout, electronic speed control, and how to decode power ratings that manufacturers deliberately obscure. We cover the battery vs. corded tradeoff, bit selection for metal engraving, and why a carbide ball-end bit with paint fill creates permanent markings that survive workshop abuse. Whether you're marking socket wrenches or hardened steel dies, learn which specs separate a precision tool from a vibrating noise machine.