Why cant they tell you how much they are but no you have to make an enquiry so you get endless B******t in your inbox, not helpful. Rant over.

Tapping reamers true, then fully tightening works for me

Jimb

Probably makes more sense on a CNC that they show where the nut can adjust the tool and then the whole lot goes into the auto feed and may not get touched again for some time.

In the hobby wokshop most of us don’t have a dedicated ER holder for every tool so having to dial in every time a cutter is changed would be quite time consuming.

The size of the nut would also put me off. Again not a problem on a CNC as you don’t need to see what you are doing but even with a DRO I like to see approx where I am and will often change to my ER16 from the 32 for delicate work or if I have clamps or the vertical rotary table getting in the way of a standard nut let alone one so much larger.