I used PLA, but ABS is OK too. You'll also need three 5/16-18 or 8mm bolts and nuts, 12 washers, and 6 x F608zz bearings. The print is 305mm talll, so you're going to need a big printer. I printed in 0.25 mm layers with 15% infill. The rollers need support material on the bottom, so turn it on but limit it to bed plate only.