Tape trick warns of sharp edges while turning

When hollowing a natural-edge bowl on a lathe, the bowl's jagged edges turn into a blur, making it difficult to know when your hands are getting too close. To give myself clear warning, I apply bright orange duct tape to the bowl's edges. The tape is easy to see, and doesn't beat up my hands if they come in contact.
—James Meier, Batavia, N.Y.