Setting the rpm of the router is an ordinary setup/configuration step for doing 2d machining. I used to run 2d router systems at sign shops for years. You're

Setting the rpm of the router is an ordinary setup/configuration step for doing 2d machining. I used to run 2d router systems at sign shops for years. You're always looking to optimise the speed of travel and router rpm to get the best cut qualities - fast travel with high quality cut - too fast can result in chips/burrs, too slow results in burning/melting and damage to bits, etc. I always had a list of settings to use for various combinations of materials, thicknesses, router bit sizes/types. It was a bit of a black art actually - sometimes the results of changes were counter-intuitive because of specific material properties (heat retention, etc), and that cheat-sheet wound up containing the accumulated knowledge of years of trial and error experimentation. "The only difference between Science and screwing around is writing it down" :)