TankRap

https://www.youtube.com/watch?v=TBOkLRoWxTE&feature=youtu.be

NOTE: The company that sold the lead screw drives for this design (Trinity Labs) has gone out of business. I have not yet found a replacement. That does not mean they are not out there somewhere. Just make sure you have them in hand before dedicating a tremendous amount of plastic to the construction of this machine. I do plan to revise the design to also use common off-the-shelf hardware, in which case it will be truly scalable on