# Physical Painting Gears ## Synopsis - 150 目砂纸 - 双孔削笔刀，先削木头再削笔尖 - 6~8mm 电动削笔刀 - 2mm 笔芯铅笔 + 摇摇削笔刀 ## Reference - [proko.com](https://www.proko.com/course-lesson/sharpening-6-types-of-drawing-pencils)