I have a 2mm radius 1-4" shank tapered ball mill I’ve been using a fair amount, and I had a problem today with it seeming to grab the material while cutting. It’s been used mostly on MDF and some poplar. I just finished going over every single screw and adjustment on the machine, and it seemed to be in good shape. I wonder if the bit is getting dull - examining it under a magnifying glass doesn’t seem to show much.
What kind of life should I expect from an end mill, and is there a way to tell if one is getting dull before it breaks or ruins a carving? Listening isn’t an option, since I use a shop vac with the dust boot.
Thanks in advance!