This is useful cooling of Stepping Motor Drive.
Especially SilentStepStick movement becomes worse when high temperature.
Power Supply Bracket for Kossel 2020 is dedicated.
Cap Screw M3x12mm + SW + Washer ...2 sets.
Cap Screw M4x15mm + SW + Washer ...2 set.
Fan 50mm x 50mm x 11.5mm ...1 unit.
Parts involved in this:
Ramps 1.4 Holder for Kossel 2020 near Power Supply
July 30 2016,
I added fan-duct.
Because if Heated Bed is too high temp (more than 80C),
step-out happened (using SilentStepStick).
August 7 2016,
I changed from ramps-fan.stl to fan-duct-down.stl.
Because it cools chips exactry.
I tried it :
Room Temp 30C
Heated Bed Temp 110C,
step-out was not happened.