This enclosure will efficiently cool the top and bottom of a SmootheBoard using a 90mm fan.
Cooling the bottom of the board is the most important. The duct under the board increases the air velocity at the most thermally dense area - under the driver chips.
Each piece is designed to print entirely without support. When printing the base, sit it on the end where the fan mounts. When printing the top, sit it on the narrower back side.
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