Ultimaker Original fan duct for mod. DualHead

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This part will not fit on the official Ultimaker Dual Extrusion Upgrade. A slight modification is necessary for this model, which was designed with a dual printhead configuration in mind, where both heads are located at the front of the machine. One major advantage of using this upgrade is that you can close off the sides of your UM with acrylic glass without having to worry about the fan duct space. The aluminum housing needs to be sealed with blue tape because there are air gaps caused by bending. Since I designed this, I've mounted a dual printhead and a self-built heated bed, and closed off the side windows - it all works really well.