It's hard to find a perfect adapter to connect most shopvacs to pro woodworking tools, so I designed my own. This is a 2.5" to 2.3" step-down connector with a 90-degree bend that fits perfectly onto both sides. It should work with other shop vac brands, as well, as most hoses are around the same diameter. It goes on loose and smooth and then gets snug, which holds it perfectly in place at both ends. I printed flawlessly on a Bambu Lab X1C with Monoprice PLA filament (cheapest I had on-hand) that sat on my third floor for 5 years, with it facing downward (like an upside-down V) with Tree supports generated by Bambu Studio. It took just over 6 hours, using 159.5g of filament (53.48m).