Summary The protector rings sit a little higher than some I've seen on here. May weigh just a fraction more but worth the added protection. Designed for a snug fit. If too tight, use your razor knife to carefully adjust the fit. Prints best right side up with support for the arms. Print at 100%. Print Settings Printer Brand: MakerBot Printer: MakerBot Replicator 2 Rafts: Yes Supports: Yes Resolution: Fine Infill: 100% Notes: I used ABS for strength.