I liked the look of the Fergie, but decided that the steering mechanism was very 'representational'. The 3D model just had a couple of bumps meant to represent the steering rod and axle supports. I decided to try and model a better mechanism. I was able to import the STL file into CAD and then try to draw up the extra parts. The original model was designed to be printed on a filament printer so the detail was quite simple.

Ideally I would have removed the original features from the model but I'm finding that much more difficult than adding bits! If I try doing a boolean operation on the 3D model it makes a large hole in the surface but I can't see how to fill the gap back in. Onshape probably isn't the right tool for this but I tried Meshmixer too and got stuck with that. I'm not brave enough to attempt anything in Blender.  For now I just attacked the resulting resin with a scalpel!

I think the result makes the front end look much more complete. You can image it being able to steer now.

I was very pleased with the Vallejo 'Tire [SIC] black' which has given the wheels a really nice matt rubber look.

I'm now going to have some fun weathering it, if I bog it up completely I can always print another one.

David