XYZ Da Vinci 1.0A Part Cooling Duct

thingiverse

This cooling duct snakes its way underneath the carriage, nestled between the timing belts of the x-axis and the extrusion head. It's designed to blast two powerful streams of air directly at the tip of the extrusion head, forcing them perpendicular to each other. The duct is engineered to accept a piece of tubing inserted into one side, which can then exit the printer through the opening roof panel. This tube can be connected to any means of pressurizing air you have on hand, and I've found an aquarium air pump works exceptionally well - it's quiet, runs continuously, and is highly adjustable. This external pump configuration has the added benefit of keeping the weight of the carriage down to a minimum. The photos clearly show the dramatic difference that this part cooling system makes; those prints differ only by the application of the system. Ideally, one would modify the Repeiter firmware to use the control line going to the extruder fan to control the air pump connected to this duct instead. The existing extruder fan can remain at a fixed speed output without any issues. I'd love to hear from anyone who gives this part a try - whether you have positive or negative comments, your feedback is invaluable.