The project is an assambly that allows hotend to move in Z direction couple of milimeters. In the most downward position there are 2 screws making contact acting as a z endstop. 

Project allows using the nozzle itself as a cheap bed leveling probe. The advantage of using the nozzle iitself for leveling is the Z offset will always stay the same even after a nozzle change.

I didn't try to make this project myself as of yet because of time constranits (university exam period). I am planing on trying this myself as soon as I have time to do so.

I am open to any suggestions to make this project better and more reliable.