K40 laser engraver vent to 4" adapter

thingiverse

I couldn't find an object that suited my needs, so I created this custom solution myself. To ensure smooth printing, I carefully designed the transition from rectangular to circular, allowing even basic printers to handle the slope without any issues with supports. Using PETG with a 25% infill and five perimeter layers was overkill, but it worked perfectly fine. The print just fits snugly on my 250mm long print bed, leaving some extra space in both x and z directions. It slips into place on my laser effortlessly, sealing itself tightly without any visible gaps. However, due to the unique design of my laser, the top is slightly offset from the bottom, with a noticeable difference of 35mm between the bottom ledge and the opening's lowest point.