MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I am using emt conduit and it works great. Very smooth. I just used a 3m scrubber pad and shined it up a bit and the bushing slides with zero effort. The bars I got were from home depot found here: http://www.homedepot.com/p/Allied-Tube-Conduit-1-in-EMT-Conduit-101568/100400409