Green Core XY

https://youtu.be/Gcl-Gv-dVBU
https://youtu.be/Q_quhYsL81M

Hello,

My project is a 3D printer build with recycled components and cheap materials. This project started with my son when i started to learn him how recycling and fixing are important for his future and the earth. 3d printer is for me a formidable machine that can contribute for a responsible consummation. It can contribute to the development of imagination and is a good approach to mechanical, programming, electronics, engineering ...

My specifications :

A compact design.
Easy to move and use.
The print area is 10 cm x 10 cm x 10 cm.
Filament roll stored in the machine (250g spool).
Compatible with regular nema17 steppers and GT2 belt.
Modular head.
The must important : use a maximum of scavenged components and 3d printed parts with PLA (biodegradable).

However, i don't want a poor machine, it must have good prints. So i had to buy some parts like bearings because i didn't fin