Anet A8 adjustable height Modular Extruder

Features
-The best thing about this is that you can adjust the extruder height while printing with just one screw, that way you can leave the hotbed in a fix position, this way you don't need a sensor in the extruder
-Extruder tray allows you to remove the extruder for maintenance and replace it with another extruder really quick, just print as many trays as extruders you have, and don't use the heat block screw so you can remove the heat bar easily, I been working without the screw for a whi