Summary If you want to create cool printer with v-slot, then this holder for you. With this holder you can mount any motor fast and reliable. So easy to print, no need any support or other black magic things. For v-slot was made special profile, for better mount with it. Also, there is few nice properties wich you can manage: height and width of motor (or maybe you want hold something other), you can easy remove (just hide in project) lead stand, also you can set different thickness for your holder. So, if you need mount motor, square profile, mini fridge, or something else what can be hold by square holder - this is what you need. P'S: Stepper motor feed knob you can be found there thing:474394. Print Settings Printer Brand: RepRap Printer: d-bot Rafts: Doesn't Matter Supports: No Resolution: 0.3 Infill: 100% Customization Simple to configure Option 1 There you can change main properties. Be careful, too high "lead stand" can reduce mount strength. When you increase thickness, check your bolt length which you have. Option 2 Hide this to remove "lead stand".