Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
M8 Rod Stepped Headset Cup Press Cone
A stepped press cone with eight 4 mm-tall lands from 58 mm down to 30 mm diameter (2 mm-wide ledges) and an 8.3 mm bore that slides onto M8 threaded rod. Print two and clamp them with nuts and washers to seat or square bicycle headset cups, bottom-bracket cups or bearings. The step just under the cup's inside diameter centres it, and the next ledge pushes on the rim, so it works across the 30–58 mm range without depending on any one cup standard.
608 Bearing Press Drift And Cup
A double-ended bearing press tool for an M8 threaded-rod press: one end is a Ø21.5 mm drift whose 19.2–21.5 mm annular face lands only on a 608 bearing's outer race (never the shield), the other end is a stepped receiver cup (Ø24 mm × 12 mm deep, stepping to Ø17 mm) that catches a 608, 625 or 624 as it comes out. 44 mm tall, Ø32 mm scalloped grip body, 8.3 mm through bore for M8 all-thread — print two copies to have a drift and a receiver on the rod at once.