Very cool! I'm glad to see people taking advantage of 3d printers. Do you create the models to print from yourself? I like seeing creative stuff like this. Plus it goes a long way in really enhancing the game for your group.
I have the QIDI Tech x-One 3d printer (got it through Amazon, comes from China). I wanted something with great customer service, and they have been incredibly responsive and helpful! My print bed is 6" x 6" x 6" (or 150mm x 150mm x 150mm) I've tried doing some other stuff using the full 6x 6 x6. it has some type of printer margin that it needs a half inch on the outside for some reason. So the best i can do with the free software I have is 5.5" x 5.5" x 5.5".
The fat dragon dungeon models are based on one inch squares, so walls a combination of wall and floor space, so they are 2" x 2". There are just dungeon tile - floors that are 4"x4". There's hallways that are 2"x2" but only about 1 mini wide with the walls on each side.
So, I can do 1 4"x4" floor tile or I can do 4 x 2"x2" inch pieces. Corners take longer, walls and floors take the least amount of time.
So, I can kick off 4 pieces before I leave for work and they'll usually be done by the time I get home unless I'm doing 4 corners or 4 hallways. Because there's more to print, so that would take the slowest at around 12-13 hours to print but it's 4 pieces then when it's done....