Build an Excavator from Scratch

[pufferfish]

A medium issue I've found was the unwanted contact between the superstructure and the undercarriage regardless all the ball-bearings.


So i've added another dedicated flat bearing from igus. called "iglidur"
A .5mm thick plastic, easily cutable with a sciccor.
Glued direct onto the stainless steel with a combination of loctite 770 and 401.



After deburring and polishing the sprocket a first test



Then the optical improvement of the undercarriage begins

The front inner View is now this





And the side view before



and after the improvement