E-file
An electric file with changeable bits, used to shape and remove product.
Faster than a hand file and, in trained hands, gentler — the bit does the work at a steady speed instead of being pressed. In untrained hands it is the main cause of rings of fire and thinned nail plates.
Bits differ by material and grit: carbide cuts, ceramic cuts cooler, diamond refines. Each has a safe speed.
Also called: drill, nail drill, electric file
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