Mostly Aluminum Extrusion 3D Printer without printed part and laser cut；
Aim to use the simplest parts to create a low cost 3D printer！
Video description：【DIY悬臂3D打印机，低成本全金属方案开源】 https://www.bilibili.com/video/BV1WG4y1X7HM/?share_source=copy_web&vd_source=848a0bdee68da7365b0da106937491c6
A simple fan duct for better overhangs：
https://www.thingiverse.com/thing:5817219
