8MM AXLE Quad Roller Skate Bearing Press and pull

thingiverse

The small is the size of two bearings stacked on top of each other. Remove your wheel, insert this press over the axis, then place a bearing on top and press down your wheel. The press will distribute weight evenly across the bearing. Flip the wheel, add another bearing, and repeat. It has a hole through the middle so you can attach it to a key chain or rope. PLA, PETG, 20-30% infill. No supports are needed. The larger version can be placed on top and used as a bearing pull. Reverse the order above, use the axle threads to grip the bearing. Tilt, wiggle, and pull out.