My daughter and I wanted to create a 3D printed watermill. One of the biggest design issues was how were we going to “Glue” the pieces together. We wanted to avoid using screws and/or glue if possible and see how much we could actually “Print”. Some of the pieces we could have been combined to print in place however some of the other ones (like the beam that went from the water wheel to the motor) were simply too big to print in one piece. After some thought we decided to order the Kuman 3D drawing pen and use that to “Glue” the parts together.
Good idea!! You could also use acetone to fuse the parts together (works with pla and abs) it works really well and is very strong!