Import Tool Cutter Grinder | The HobbyMachinist
May 11, 2017· Figure if your .5 end mill gets .003 ground off it in a CNC mill you are now out .006 in places If you are trying to hold .001 your are really screwed. So if the machine does it and then probes the freshly sharpened tool, then its knows about the .003 and adjusts for it. So there are fewer of these things even ending up in a shop.