Seriously... some time I think I’ve got cotton wool instead of a brain.

Was trying to figure out why my perfectly prepared and painted stock was ruined when my CNC engraving design went off the top edge. Went back and checked my design... nope, looks fine... the stock was measured and cut exactly... so what was the problem.

Yup, I’d prepared the stock my cutting this one piece in two but not exactly. I needed my stock piece to be 325mm deep and the offcut was only 290mm... and I had picked up and prepared THE WRONG PIECE... so when I ran my job the v-cutting bit almost hit a screw when running out of stock. DOH!

So what’s your noob-stoopid mistake while using your CNC?