I downloaded this one earlier today after finding it on my RSS reader (I watch everybody!). This looks very cool and I think you did a great job, Martin. In fact I want to make it the featured new model on the next Paper Hollywood update. I actually started work on a card design for Space Station V back in 2006, but my job suddenly turned my life topsy turvy and I never managed time to get back to it. The real trick seems to be in supporting the hub. I see you included a representation of the cable(?) braces which no doubt reinforce the model well. Anyway, I'm glad to see your model and I can't wait to build it. This has to be the first card model version on the web and one of the few models of it ever. There was a LE resin version out some years ago and a small Christmas ornament, but I think that's about it.
The actual filming model itself had nasty structural problems and had to be handled very carefully when they were shooting 2001. I saw a photo of the model taken years later and it was saddening. It had been left out in the weather and much of it had collapsed. I'm pretty sure it's entirely gone by now.
Wade