This is a better Z axis Endstop mount for Vellman K8200 3d printer. Originally the endstop was attached to aluminium profile with just one screw. This caused that when Z axis was returning to home position it could occidentally move the endstop and hit the print bed.
Also its better to modify z axis regulation screw and mount it upside down ( the head is directed upwards) so you can regulate it from above and on the bottom of screw you put a cap that makes the area which triggers the endstop bigger (the one attached here is for M3 screw and its inner hole is 2.8mm so the screw will cut into material and cap will hold on it).
List of printable and non-printable parts is in "Instructions" section.Beside printing the mounting you will also need: