4 inch quick hose quick disconnect

I wanted a super quick way to swap 4 inch hoses between my laser exhaust and a mini welding extractor exhaust. The magnet ones were cool but way overkill for my needs (plus I never have any magnets on hand..) Thus this design was born and continually tested for a few months to ensure reliability. Please note, this design was meant to fit over a small blower / sucker so it was designed specifically for that with a smaller diameter on one side and a thinner profile as a result. If this design is not printed with many walls, or at a high infill- the small notch will skip and not result in a perfect sliding action due to thin walls and small recess and notch. It usually works perfect at higher wall and infill amounts as long as you don't force it past the notch.