或许加长中心轴的长度到36mm可以转更久，但是目前这个悬挑法的磁铁摔地上还是容易掉出来……还是打印暂停埋入/侧面开槽塞入再加卡扣堵住更好。 反正我把中心轴改到10mm获得了一个不错的类似鼠标滚轮的edc玩具。或许以后换小磁铁，加个舵机控制两侧距离就可以实现类似罗技的无极滚轮（带磁势能反馈），但我目前的知识还是做不到。 Perhaps lengthening the length of the center shaft to 36mm can turn longer, but the current magnet of this suspension method is still easy to fall out... Or print pause buried/side slot insert and then clip blocking better. Anyway, I changed the center axis to 10mm and got a nice mouse wheel like edc toy. Perhaps later change the small magnet, add a steering engine to control the distance between the two sides can achieve a Logitech similar endless roller (with magnetic potential energy feedback), but my current knowledge is still unable to do.