"V10" a redesign of the GRRF PRotos

I designed a new Printer based on the GRR PRotos metal frame.
The intention was to remove all design weaknesses I found over the last 1000 hours print.... and it works more than perfect.
Replaced the wobbly 8mm stuff with stable 10mm linear guides for all axes.
Z axis is prepared with precise 8mm trapezoid thread
Special Cooling system for perfect PLA Printing fits for standard GRR Hotend.
enhanced Hotend version for E3D Nozzles and bigger Heatblock for rock solid extrusion tem