when I carve I often get several lines deeper than the rest of the carve, usually near the beginning but they can show up anywhere, here are three photos of what I'm talking about. These were done on the universal carrier base but they happen without using it as well.
My bits are sharp, the mpc's - one from Cartwright by Michael Tyler the other is one I did myself so I don't think it's the pattern.
Any thoughts?
Thanks
mjc