We have a few Bridgeport vertical mills here at school and we are trying to utilize the 5 S's of Lean Manufacturing by creating a more organized work space. It took a few tries to fit the holder to the mill perfectly, but it should fit with a press fit. Each mill had some dimensional variations from 1-2 mm. The model is nice and rigid and holds the handle quite well. Printed with a 0.3 mm nozzle at a 0.15mm layer height. Ultimachine Black PLA extruded at 200 degrees.