3D Printed Bathroom Sink Hose Adapter for Outdoor Gear

Design preview. Rendered from the file, not a photo.

The maker says it fits: Standard bathroom sink faucet aerator, garden hose connector. See the proof

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What it does

Connects your garden hose to any bathroom sink so you can fill pools and tanks with warm water right away.
Lets you adjust water temperature before it reaches your hot tub or fish tank, saving your heater from working overtime.
Prints reliably when you place the coarse threads on the bottom for a secure fit.
Cuts fill time in half, so you get back to enjoying your spa faster without long waits for heating.

Fill your hot tub and fish tank with the water temperature you want, right from your bathroom sink. This adapter hooks your garden hose straight to the sink faucet, so you control the heat before the water ever reaches your tank.

Your hot tub heater works less hard when the water starts warm. Your fish tank stays safer when you can match the temperature. You spend less time waiting and more time relaxing. The adapter prints best when you orient the coarse threads on the bottom for a tight, leak-free connection.

This is an open design made for real home needs. Your feedback helps make it better.

7.2k downloads in the maker community. That is interest in the design on the site it came from, not our sales.

What it fits

The maker says it fits: Standard bathroom sink faucet aerator, garden hose connector

That is the maker's word, not a fit we measured. Check the size below against your own.

Standard bathroom sink faucet aeratorFrom the maker's own listing title, checked 2026-08-13. See the original post
garden hose connectorFrom the maker's own listing notes, checked 2026-08-13. See the original post

Brand names here only say what this part fits. We are not connected to those companies, and they did not make or check this part.

What you get

This design prints as one piece.
Nothing else to print or buy for this to work.

What it is made of

Designs like this print well in PETG. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.