I came across this design for an H-Bot 3D printer that utilizes inexpensive EMT thin wall electrical conduit for the frame, and wondered if anyone here has ever built or even seen one?
It looks like it would be really solid while still remaining inexpensive to build. All of the information is four to five years old though and it doesn’t look like any further development has occurred. There are only a handful of videos on YouTube, and several of them are the original developer’s videos. It seems as if the design never really “took off”, although I don’t see any reason why not.