This is a Shop Vac nozzle that fits in the X1C cabinet to clean the air filter intake. I had spray painted something nearby and I saw that the paint had been ingested thru that intake. None of the Shop Vac nozzles I had would clean it out. It wasn’t much but was easy to see because it was fluorescent paint. So I drew this in Fusion 360 and printed it. After a few adjustments it’s working pretty good. The paint dust is gone so it did the job. I printed mine in ABS.

The ID of the end of it is 32mm. Even if you don't get paint in that intake, I would bet that dust is going to build up there too. And you might not be able to see it.