Still for a room sized prototyper that uses the floor of the room as thebuild platform or a set raised platform wouldn't an oversized version of the maki box design work? The main change other than size of components would be instead of one z-axis control rod, you'd have to have several to raise the x and y-axis. For acuracy you'd also have to have x and y-axis controls on both sides of the printer for the same reason you'd have more z-axis control rods. Mounting and feeding filament would be an issue for large builds. Finding parts that would be made for the size of the room might be prohibitavely expensive.
Still for a room sized prototyper that uses the floor of the room as thebuild platform or a set raised platform wouldn't an oversized version of the maki box design work? The main change other than size of components would be instead of one z-axis control rod, you'd have to have several to raise the x and y-axis. For acuracy you'd also have to have x and y-axis controls on both sides of the printer for the same reason you'd have more z-axis control rods. Mounting and feeding filament would be an issue for large builds. Finding parts that would be made for the size of the room might be prohibitavely expensive.