Nema 17 Heatsink Clamp

thingiverse

Clamp that snaps onto the back of a NEMA 17 stepper motor, holding a common 40x40x11mm passive aluminum heat sink in place. This design uses Amazon's B00REFPLVM asin, but cheaper alternatives are also available. The "legs" clip securely onto the motor housing, while top bars provide spring tension to tightly hold the heat sink against the motor. Look closely and you'll see no screws required! Thermal paste enhances heat transfer, though it's not essential since the heat sink is held quite firmly in place. The "legs" feature retaining clips for tie-wraps if extra security is desired, but they work well on their own without one. A Sketchup design file has been included with this project. Print Settings: Printer Brand: LulzBot Printer: Mini Rafts: No Supports: No Resolution: 0.18mm Infill: 40% Notes: Printing with no supports, only minor cleanup was needed for overhangs. It's recommended to use ABS or Nylon since PLA may soften at high stepper motor temperatures. For optimal heat transfer, a drilled heat sink held by the motor screws is the best solution. However, if you don't want to remove motor screws or can't find longer screws, this clamp provides a suitable alternative.