I have a Bosch 1617EVS variable speed router in my CNC. For what I want to cut, a machinist friend told me I need to get to about 2-3K rpm. (urethane/plastic, about 2.6" deep, 3/8" dia., 4 flute end mill) The Bosch will only go down to 8k, and I am afraid of upping the feed too much. I bought a home made machine, and it's a little more flexible than I had hoped. Part tolerances are not very tight. Is there a simple way to get the rpm down to where I need to be? Or am I in need of a different machine/spindle? Out of work and no $$$ at the moment though.
Thanks for any feedback.
Dave