Six-edge pencils will not roll, and of course other edges will not roll, but six-edge pencils have the most advantages.
1. The hexagonal shape is the most beautiful, has standardized geometric shape, and is easy to make with processing tools.
2. The hexagonal rib uses good materials and has high strength.
3. The eight-sided rug is not beautiful and nearly round, and the anti-rolling effect is poor. Four waves are not in line with the aesthetic concept.
4. The odd numbers are awkward to hold.
5. Therefore, in addition to the traditional round shape, hexagonal shape is the first choice.