I have added a router to my homemade CNC machine. It used to smoke at a feed rate over 20% with the Dremel. Now with the router it can cut at 100% and the cuts are much smoother.
It can also cut right through the board. I changed the feed rate while the Z axis was moving and caused it to crash, almost cutting through the board. That is visible in the bottom left side of the "N".
I am also upgrading it to an aluminum frame, this makes the machine more solid than Plexiglas.
This CNC machine can be built with my plans found in my latest book "inexpensive CNC Projects".