bicycle headset tool

thingiverse

Another bicycle headset pressing tool that's perfect for 1 1/8", 30.2 x 41 x 6.5 mm angular contact ball bearings. It'll also come in handy when sealing off seatings while spraying the frame, which is exactly what I plan to use it for first. This tool relies on a 12 mm screw down its center - yes, mine has to be that short, but longer screws or bolts are definitely available. Additionally, you'll need a nut and two large washers, often referred to as "body discs" in some circles. I printed this design fairly solidly, opting for four walls and 30% infill to get the job done.