CNC PCB Isolation Routing

[skypn]

Does anyone here do this? I bought a 3018 two months ago, and I'm having a devil of a time.
TIA

[skypn]

Well, things are getting a little better. I've stopped breaking bits. . I'm slowly discovering how to tune in the software. One has to use three different types, and if they all aren't on the same sheet of music, things go south. Since my first success, I've toasted 4 boards, so I guess I'm 1 and 4. Hopefully today will produce better results.

[soggybag]

I have an Othermill. I do pretty good if I use the 1/32" bit. The engraving bit is also great these are really hard to break. I don't, go anywhere near the 1/64" bits these seem to break pretty easily.