Dual Blower Fan to 40mm Adapter

thingiverse

This is a simple plate I designed for boosting two 50x15mm blower fans to replace the single 40mm fan used in the volcano cooler published by AK_Eric. It's truly an overkill. When I run the fans at full speed, my volcano can't stay at temperature even with insulation. The first time I tried it out, my printer stopped extruding halfway through the first layer due to cooling because the temperature of the hotend dropped below the "safe extrude" window. I've been running it at 10-25% for an open printer, but I designed this for printing in a completely enclosed environment. On a D-Bot, the fans need to be oriented horizontally, with one blower drawing air up from above the heatbed and one drawing air down. You could theoretically install a switch to change the source of air (for example, using warm air for cooling ABS parts or cool air for PLA), but I have both fans wired in parallel. I printed mine to fit snugly enough to hold the fans in position with friction alone, then added a bit of super glue to seal it. Your results may vary. This should fit any 40mm fan that needs more power - an awful lot more power.