UFS-061B Improved Spin Drill

thingiverse

The version is difficult to print correctly.The section above the hex for the drill bit has a shell that is supposed to spin freely. This lets you hold the drill steady while you spin the drill bit with the handle. I had to use pliers to break it free after printing. You can see in the photo how chewed up the part looks from the pliers bitting into the part to break it loose. The gap is small and wants to fuse together. Good luck. I do not recommend supports.