Rather than scale the shafts down or enlarge the holes in the STLs, I elected to drill out the bushings (not in small part because I'd already printed everything at that point).
The biggest assembly issue with GolanHertz's original is the fit of the snap-in shafts. Colorfabb would be good for the legs and triangles, too, but I'd already printed these in ABS and they were OK, albeit with a bit of splitting in the legs (gives it an organic feel :) For these I used Colorfabb PLA from, which has PHA added for flexibility and ease of printing. I printed all parts in ABS except the wheels, which had severe warpage and splitting problems. ANY PART NOT INCLUDED HERE MUST BE SCALED FROM THE ORIGINAL IN ORDER TO BE COMPATIBLE WITH THE NEW PARTS. All parts have been scaled to 90% of the original in order to fit the build volume of the Up/Afinia printer.
