So I hardly ever use quarter inch bits but I do have occasional need for them and I have noticed that the ER11 system doesn’t handle it very well. It won’t fit into a 6 mm college but I keep getting slop and about 50thu of run out I need to tap out. I also don’t get the “click” that means it’s locked in.
Do I just have shity import collets, or is there a metric to imperial conversation thing going on? At 6.35mm it’s over the normal 0.5mm collapse for the collets but way to big to fit a 6mm.