FEED RATE == how quickly the machine moves as it cuts
RPMs == speed == how quickly the router/spindle turns
PLUNGE RATE == how quickly the machine moves downward to begin a cut
DEPTH PER PASS == how much the machine advances in depth if it is unable to make a cut in one pass
STEP OVER == how much the tool overlaps each pass
There is a glossary on these terms at:
and they are also discussed in:
If you were trying to cut a 2" thick piece of stock the first question is:
How long were the cutting flutes on the tool?
Second question is:
Were you trying to cut a slot just as narrow as the tool?
Where possible avoid slotting and add geometry and cut as a pocket
and/or
and consider leaving a roughing clearance and taking a finishing pass.
