I made this for this specific vacuum https://www.amazon.com/gp/product/B0BPXVMGL4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 to get all the hard to reach places in my laser engraver enclosure and 3D printers. No supports needed, 0.2mm height, 3 walls, 0 infill. You may need a raft to ensure adhesion.

Model is tested, proven, and functional.