This is a great spinner design! When spinning, there looks to be zero material surrounding the center bearing. Way cool! I thought it would be fun to print with PLA-CF. There were a few strings that had to be scraped off before pressing in the bearings that I’m sure from my filament choice and not the design file. The bearings fit nice and tight. Placed the spinner between two pieces of wood and used my hands to press them in. Note: the two spinners on the left show the top of the print and the two on the right show the bottom (plate) side.