Sketchup

I'm using Google Sketchup. Can you tell I'm not the modeler in my shop? As the son of an engineer I am a great disappointment as far as drafting goes. Still, this will give you an idea of what I'm trying to do. But they ain't engineering drawings, that's for sure.

I want a freestanding airlock structure with a working door. I suspect the door is going to be lifted by someone off - camera because I'll take what I can get with that.

The most important thing is that the airlock be light enough to be able to be moved without wailing and gnashing of teeth but to be rigid enough to not fall apart while being moved. I'm imagining a wooden frame -- much lighter than the frame for the spaceship which Mike Kessell designed for Millennium Crisis. Indeed, imagine Mike's design but shorter.