This is the stepper motor cooling fan mount for Rat Rig V-Core 3. 40mm fans are used. It can be mounted to 3030 aluminum extrusion with M6 bolts and T nuts. The fans can be mounted with universal self tapping PC fan screws. Use with 40x40mm heatsinks attached to the steppers.
BOM:
2x 40mm cooling fans
2x 40mm heatsinks
8x generic PC fan screws
4x M6x12mm bolts
4x 3030 M6 T-nuts
The author hasn't provided the model origin yet.