Flexion compressed air cooler

thingiverse

I was intrigued by the possibility of using compressed air to cool 3D printer extruders instead of fans - and I must say: it works exceptionally well, far exceeding my expectations. Currently, I'm printing and cooling with a pressure range of 0.2 to 1.0 bar. The print results are excellent, and the noise level is significantly reduced compared to using 2 to 4 forty-millimeter fans - provided your compressor is located at a distance or soundproofed, of course. The idea for this upgrade stemmed from upgrading my CTC with two Flexion extruders. My old cooling duct no longer fit due to the thermal isolators surrounding the heaters. Most existing designs make it difficult to observe the printer in action because of the numerous fans positioned around the print head. Moreover, the compressed air upgrade resulted in a lighter printhead, which should positively impact jittering. The last photo shows how the printhead appeared prior to the improvement.