Bruno, Confucius say
"Baseball is wrong - man with four balls cannot walk"
Bruno,I am not CNC'd and have 2large Makita routers,2 monster porter cables and 2 makita trimmers.The idea is I don't like to change bits.One router cuts circles,one trims,one cuts from templates,one trims arborite etc.The bit or the smallist drill hole is 5/16 which in 18mm birch would probably result in 200ipm or less.Tool change is necessary at ten grand or at least a spindle and drill.My workers can blow away a CNC at 200ipm with a table saw and pin router.As a hobby router any ipm is sufficent as its cool or fun.A hundred grand router is so fast you have a guy just watching it to unload parts when finished.Hopefuly a hundred grand router can be self made for 20grand.
gotta get back to the Bradors.
Merci Bruno
Larry