About this 3D model

模型多色答打印基本都是同层多色，浪费耗材量极少，并且不需要支撑。需要一个6002轴承（图中蓝色部分），组装十分简单。 The model can be printed without any supports. It's multi-color but all on the same layer, so it won't waste materials. I printed it using PETG, so printing with PLA shouldn't be an issue at all. The model requires a 6002 bearing, which is the blue part shown in the picture.