What is opinion on this dervice?

The idea is to make any wasted plastic into spools for 3d printer about 48 of them.

On market are just individual extruders but with design is possible to make it 48 of them at the same time.
The power for all of the heaters is 300w (total 14 400w).
For powering devices I would probably use just solar power.
For every different color pigment one device or just for main colors like red, green, blue, white, yellow, black, and nylon.