I have a couple of vintage power tools that are not well equipped to handle any dust collection (as was the case back then). the problem is they have a 1" internal diameter, the same as my shop vac hose. So one does not fit over the other. I was waiting to try to find some 1" o.d. rubber plumbing connector but I've not been to a big box since mid-March. Then I decided to try something else. I got a chunk of 2x4 and some Forstner bits and drilled holes to fit my machine and hose (sometimes one is different than the other so concentric holes of the right diameter. Shove on for a friction fit (one took a few dabs of hot glue.) Looks to be successful.