FitPrint
Hose adapters

Hose and vacuum adapters between any two sizes

Shop vacuum to sander, 32 mm hose to 40 mm port, aquarium tubing, garden hose: adapters are simple in theory but only work if both ends fit. FitPrint asks whether each end slides inside or over the other part, which diameter you measured (inner or outer), and builds a tapered or stepped adapter with the right clearance.

Ends
Inside or outside fit, straight or tapered
Measure
Outer Ø of the part that goes inside, inner Ø of the part it goes into
Fit
Friction: about +0.4 × fit gap; slip: +1 × fit gap
Design an adapterFirst part free · no credit card

Prompts

Vacuum adapter →

“Adapter from a vacuum hose with 32 mm outer diameter to a port with 40 mm inner diameter, friction fit.”

Sander dust port →

“Adapter from my sander dust port (outer 26 mm, tapered to 27 mm) to a 35 mm shop vac hose (inner).”

Aquarium →

“Y-splitter for 12/16 mm aquarium tubing.”

Tips

  • A slight taper (1–2°) gives a tight friction fit over a range of diameters.
  • Print with 3–4 perimeters for airtight walls; PETG is more durable than PLA.
  • Add a stop ring so the hose can't slide too far.

Frequently asked questions

Will it be airtight?

With 3+ perimeters and a friction fit it is airtight enough for vacuums and dust collection. For water pressure use PETG and test carefully.

Related

Updated · Generated parts are a starting point — always test-fit before relying on a part.