Bút bi Rollerball #3 có thể in 3D dễ dàng

Rollerball Pen #3

This is a very fine pen that can be mass-produced on printers. 
It uses a 110mm pen refill and is compatible with most Rollerball Refills, such as DELI S206. 
The entire printing process is very fast, making it the preferred choice for daily use.

It can be printed with both PETG and PLA materials. 
A recommended layer height is 0.1mm. 
No supports are needed. 
The head needs to be glued together.