https://www.printables.com/model/759734-oreck-vacuum-tube-extension#preview
Replacement tubes are only about $15 but why spend that when I can just print them!
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Phone cases should probably be printed in TPU, which really shouldn’t be shattering. (Unless it’s freaking cold outside.
Maximum drop protection. Would come from a hard shell over a squashy TPU case.
There’s really not that much force on these kinds of things, of greater concern is air flow but it looks like op nailed that.
(If op had taken it down to a smaller diameter,, cut outs in the nozzle or somewhere would be be necessary- otherwise the vacuum’s motor has to work too hard to get proper air… and they rely on that flow to cool down.)