E3D v6 40mm Cooling Fan Duct

thingiverse

I wanted something to chill the plastic as it emerges from the nozzle but didn't want it to be cumbersome since my printer is somewhat compact and I didn't want to shrink its usable volume further. So I swapped out the stock piece with my own and replaced the stock fan with a 40mm one. Essentially, it's the original piece but at the bottom air flows directly towards the nozzle. Note: I've set my fan to 60% for perimeters and 30% for infill at around 80%, depending on the fan, the hotend can be cooled so much that it won't reach the desired temperature. Update: I added a second version that should be easier to remove support from, isn't as close to the heater block, has exit slots if the back is blocked, and directs air more towards the nozzle but will make it harder for air to flow through. I'm available for hire at Shapeways here: https://www.shapeways.com/designer/jonathanmarch Print Settings: Printer Brand: Solidoodle Printer: Solidoodle 2 - Expert Rafts: Doesn't Matter Supports: Yes Resolution: .1 Infill: 25% Notes: Use whatever settings you normally use but make sure to enable support unless you can bridge about 40mm. Post-Printing IMPORTANT If the hotend is hot and the fan is off, the PTFE tube inside (if there is one, it's for 1.75mm) can soften and render the hotend unusable so either always ensure the fan is on or you can modify Marlin slightly. Under MarlinMain replace the block of code similar to this around line number 1163: #if FAN_PIN > -1 case 106: //M106 Fan On if (code_seen('S')) { fanSpeed = constrain(code_value(),0,255); if(fanSpeed