Duct tape. It sounds silly, but it works. Thats what I did for my first blast cabinet when the hose didnt fit. Worked like that for over a year. Then I had to change the tape.
Good idea. But I saw that Home Depot has the adapters for $5, so I'll take a 5 min. trip tonight to pick one up. I haven't got any duct tape at the moment so I'd have to go to the store either way