Beyblade X bit : Rolling Ball

试着做了一个类型可以变化的BIT。在顶端加了个可以转的小球，这样当小球转到底部因3D打印悬垂质量糙的部分时，就变成攻击性轴；而转到顶部打印质量较好部位时，就变成持久轴。你可以尝试把小球尺寸放大缩小来获得自己想要的效果~ I tried to make a BIT with variable types. I added a small ball at the top that can rotate, so when the ball rotates to the bottom where the 3D printed part has rough quality due to overhang, it becomes an ATTACK BIT; and when it rotates to the top where the print quality is better, it becomes a STAMINA BIT.You can try to change the size of the ball to get the effect you want.