About: I'm an environmentally conscious experimenter who loves to bring people together, build things, and when possible...blow things up! See us on YouTube too! https://youtube.com/WildmanTech

Have you ever needed to pass some wires through a rough hole in sheet metal? Well I have and if you don't protect the wires from the edges of the sheet metal, it will eventually cut into them and create a short circuit.

This giant grommet is one way to protect them.

If I had a 30 watt Zing 16 laser cutter like the prize of the contest this is entered in, this Instructable would be about using a rotary indexing table to make this project, but I don't so we're going old school.