Quick update...
Have been struggling with the undercarriage but I have now got the basic structure.
Here is a mock-up shot of how it looks:

And here is a shot from underneath:

What I am trying to do is to make an undercarriage that I can remove if I choose (so I can use the model as a proper ship). The red circles indicate where I will be placing screws to mount the undercarriage to the ship. It's all very crude, I grant you, but I'm not real great at elegant building.

When I have got this portion of the build finished I'll post some more photos.
