So yeah, I'm entering a brick in the Mars Mission Challenge. It's printable on a dual extrusion head with support material that dissolves away. The brick is a recursive structure of a three dimensional binary tree, starting with a large central rod branching to two smaller rods, then to four smaller than that, and so on to as many levels as you like. So how does this make a mars base? It's a brick right? Yeah, what you do is you take two of these and you press them together. The plastic deforms and interlocks, attaching the two bricks together without cement or adhesive. You then build stuff like igloos are made, just by jamming bricks together and then coating them with something half way between spray-on concrete and papier mache. Nice thing is, it's a low skill task cause under those gruelling conditions it'll be tough to be precise. This way you just force two bricks together and they lock, then add brick after brick, apply the coating, and you've got shelter. This brick can be used to create any structure within reason, so I didn't make a base plan. The brick is ALL base plans, or many of them anyway. Also great for quick repairs when that robot goes amok and crashes into the hydroponics garden or whatever. I figure the precision polished approaches have their place too, but one thing the explorers will need is a good brick. So... BRICK IT! Les