spiky drill bit

This is a 1 1/2” carbon steel crimped wire drill bit. The strong & sharp wires go all around the bit. I got it to rough up some clear acrylic, but it’s mostly used to remove rust. Wound up using a metal flat-head (slotted) screwdriver to push out some of the spikes for more interest. Don’t use your fingers, as I tried at 1st. Ow. lol.. Happy Macro Monday!

Done