End mill won't sit square in collet
Re: End mill won't sit square in collet
All the commentary about the collets is moot until the run-out in the spindle is addressed.
Re: End mill won't sit square in collet
Based on the video of the machine on the company web site, I would strongly suspect that the spindle is at fault. Either the locating taper is off or the spindle itself is bent. The only other possibility is a defective collet. The tram of the machine is irrelevant to the effects you are seeing.