SummaryFor use in Human size Robot Arms and Legs. Fast and strong. Printing specs : Infill : 10% Number of shells 2 Layer height : 0.30mm Build plate : 110deg Speed While extruding : 90mm/sec Speed while traveling : 150mm/sec Printing these files with support and print time : GearboxCasingMain.stl 4hours 3 minutes MainGear.stl 3 hours 24 minutes The rest of the files normal without support.and print time : Gears1.stl 46 minutes Gears2.stl 24 minutes GearboxCasingTop.stl 2 hour 2 minutes. I use this motor on 12v https://tigerimports.net/sunshop/index.php?l=product_detail&p=9635 "O" and i print only with pla and for support Abs