We ended up using a clear power supply which had a fan on the bottom of it's case. We drilled a hole into the bottom of makerbot 1280 to allow the fan to function, and decided to make some feet to futher support the makerbot and allow more air to reach the fan. A nice side effect of this is that the blue leds that are in the fan shine out the bottom of the device, giving it a nice unearthly glow.

Instructions

This is a very easy part to make. The hole in the center is designed and tested to use the extra screws included with the makerbot kit.

Pictures can be found in the flickr Makerbot pool. Look for Edagawa.

I've added the Sketchup source file, although it would probably be easier to model a new one than to modify this file - it's that easy!