This is a double axle dump truck with pup trailer. I designed it to accompany my tracked excavator model. It is intended to be tough enough to play with as a toy, not just a shelf model.
Everything assembles with snap fits, but if you want the wheels to really spin freely, a drop of mineral oil or a smidge of petroleum jelly on each axle before assembly will help.
The tires and mudflaps can be printed in TPU as well as PLA. The TPU print profile has the tires slightly undersized for better retention.
2024-05-19: Added scarf seams, added TPU profile, fixed dump body geometry error at pivot
2024-05-06: Added brim to dump gate, more piston clearance, modelled roll-over tarp cover
2024-04-18: Updated out of date dump body STLs to match 3mf files
2023-12-04: Minor changes to truck and trailer chassis pistons to reduce sticking
2023-11-19: Increased retention on wheels. Let me know if you have issues with them being too loose or taking a lot of force to install.