You don’t need to. The point is that it’s a compact and passive linear slide that can have variable punching power. If you put rubber bands between the two bearings, then the bands will naturally pull the two bearings together.
You don’t need to. The point is that it’s a compact and passive linear slide that can have variable punching power. If you put rubber bands between the two bearings, then the bands will naturally pull the two bearings together.