This is the most common diameter of 3D printing training materials. The material with line diameter 1.75mm is used for near-end feeding, which can accurately control the discharge and make the printed model more delicate.

3D printing will require more details during training, and 1.75mm is the most suitable. However, there is another material with a diameter of 3.0mm and a line diameter of 3.0mm, which is mostly used for 3D printers with remote feeding. The advantage of remote feeding is that the nozzle is lighter and the positioning is accurate, but the printed model is more wiredrawing.