For the wheels, I glued coffee stir sticks in a 90° angle on top of each other. Using a circle cutter, I cut into the wood, before cutting all the way through with a hobby knife in the marked groove. Finally, I drilled a 3mm hole into the middle for the axle.
The wheels got a steel rim from .75mm plastic card. I cut three grooves into it (the fourth is where the two ends meet) to represent different segements of metal that were fitted around the wooden wheel.
For the 3mm axle I took a 4mm wood rod, and shaved off ~1mm around it, to get a rough, non-uniform, hand crafted looking axle.
Wheels and axle were glued under the frame.
With .5mm plastic card, I added metal banding, which is holding the axle in place, but that was the wrong material choice, as it cracked at several places. So I finally added a layer of sprue goo over it. This part will be hardly visible anyways, once the chariot is mounted to its base.
For the side walls I cut the general shape from paper, transferred it to the wood, and cut the shape with a knife, then sanded the edge.
The shaft I held into boiling water's steam, and slowly bend it in shape.
Not too bad, for trying this technique the first time. I only got one mild crack, otherwise this worked quite well. Next time I need to bring a little more patience.
The shaft was then glued in place.
Here is the final general look with the three draft wolves. Base will be 7.5cm x 12.5cm; the width being based on three wolf base widths (each 2.5cm), and the lenght as short as possible but also based on a 2.5cm increment.
On the wheel rim and all the metal bands, I added nail heads from different diameter plastic rod.
Oh, and I had four snotlings lying around, they will be decorations for the chariot.
Still a lot of detailing left.