40mm external fan mount to cool the driver FETs in the Snapmaker U1. Takes the FET temperatures down to about max 57C with ambient 26C using an old 4.5V supply from Radio Shack.
Snap fit with Sunon MF40100V1-1000U-A99 fan, YMMV.
Mounts with Scotch-Mount Extreme Double-Sided Mounting Tape.
Printed with 0.4mm nozzle in PETG, tree supports.