Steff
I was once contacted by a bus company to cut logos out of their non slip floor surface material.
They gave me a sample which I put on the router to try…the minute I started the cut, bright orange sparks fanned out.
I stopped the move and looked at the bit – the new 6mm bit was ground down to half its diameter!
The non-slippiness was made by embedding carborundum powder in the plastic, and I was effectively trying to cut sandpaper!
I wore the loss of the cutting bit and sent them on to a waterjet cutting place instead!