Edit: It appears I didn't scale the parts down to H0 after drawing them. Pieces are now scaled down, but they appear on the list by the same name! Pardon the confusion caused by this!
2nd Edit: Added approx. 120mm long frame halves for smaller size printbeds. To print the frame, print male and female halves to snap together.
I haven't printed or tested yet. WIP so bogies are still under work, but I decided to upload this anyway. Parts should be snap-fit, no gluing necessary.
Hole for the bogie on the underside is 3 mm wide, so M3x10 screw will fit.
Frame x 1 (Alternatively male and female, if printbed is smaller than 200mm)
Log stopper (end wall) x 2
Log spikes (or forks, whatever you like to call them) x 10
Stopper x 4
For linkage, choose your own or go with the UIC coupler. A metal chainlink can also be used to couple wagons.