This connects a HERCULES 3 Amp Corded 5 In. Variable Speed Random Orbital Sander (https://www.harborfreight.com/3-amp-corded-5-in-variable-speed-random-orbital-sander-56458.html) to a 1 7/8" (48mm) hose. The specific vacuum I use is the Rigid 5 Gal. 5.0-Peak HP Portable Wall-Mountable Wet/Dry Shop Vacuum (https://www.ridgid.com/us/en/5-gal-stor-n-go-wet-dry-vac). The sander end of this adapter has grooves which provide a locking connection to prevent separation.

Print Settings Printed without supports with the small end down on the print bed.