The exhaust port on the glowforge is only about 12.5 mm long, which makes it somewhat challenging to connect and remove an exhaust vent. This is a simple design to extend the exhaust port, while keeping a good seal.
This is designed to be printed on a semi flex filament. I used Sainsmart TPU. A flexible filament is needed because it needs to stretch over the port to make a good seal. You could potentially use PLA, ABS, PETG, etc. but you would need to modify the design (use the customizer) to increase the inner diameter so it will fit over the glowforge exhaust port.
You may want to use a skirt / brim to help with adhesion.