SummaryA couple of quick adapters to mount NEMA 11 and NEMA 17 stepper motors on 15mm OpenBeam rails. On the bottom are alignment bumps to align the steppers at 0°, 45° and 90°. The mounting specifications for both motors was obtained from the web.Print SettingsPrinter Brand: MakerBotPrinter: MakerBot Replicator Z18Rafts: Doesn't MatterSupports: Doesn't MatterResolution: .2mmInfill: 20Notes: Supports are only necessary for the NEMA mounting holes, if you have good bridging with your printer you may be able to skip.Post-PrintingMounting screwsUsed 2.5mm mounting screws on the NEMA 11, the NEMA 17 required 3mm screws.