Nema 17 Heatsink Clamp

Clamp that snaps onto back of NEMA 17 stepper motor and holds a common

40x40x11mm passive aluminum heat sink (I used Amazon asin#B00REFPLVM,

but much cheaper sources are available).

The "legs" clip/snap onto the motor housing, and the top bars provide spring

tension to hold the heat sink tightly against the motor. "Look Ma, No Screws!"

Thermal paste will help with heat transfer, but is not absolutely needed as the

heat sink is held pretty tightly against the motor.

The "legs" include features to retain a tie-wrap if extra security is desired, however

the clips work very well by themselves so the tie wrap isn't really needed in my

experience.

Sketchup design file included.

Print Settings

Printer Brand:

LulzBot

Printer:

Mini

Rafts:

No

Supports:

No

Resolution:

0.18mm

Infill:

40%

Notes:

I printed with no supports, and only minor cleanup was needed for

overhangs. Recommend using ABS or Nylon, as PLA may soften

at high stepper motor temperatures.

Note: For absolute best heat transfer, a drilled heat sink held with

the motor screws is a better solution. But if you don't want to remove

motor screws, or can't find longer screws, or simply don't have a drilled

heat sink -- then this clamp will do the job. :-)