4 inch Duct Exhaust Flange

thingiverse

Here is a sturdy 4" duct flange to facilitate seamless connections between 4" round duct work for efficiently exhausting whatever you need. I utilized mine to exhaust fumes from my K40 CO2 laser with great success. I used 6-32 x 3/4" machine screws, but cleverly reduced the hole size so you can easily drill them out for larger screws or opt for smaller ones if that's what you have readily available. Print Settings: Printer: Da Vinci Pro Rafts: No Supports: No Resolution: 0.2 Infill: 20%