River collection

Water filters

Activated-carbon water filter designs with controlled toolpaths, food-safe materials and practical tap workflows.

Jem printable water filter

Jem

A polypropylene tap water filter for activated carbon. The flower-like top opens for filling, the body attaches to standard taps, and the bottom grid holds carbon while water passes through. Joined G-code keeps the water path cleaner by reducing micro-stringing.

Jusy printable water filter

Jusy

A handheld PCTG water filter used beside the tap: remove the protective cap, hold the body under running water with one hand, and fill a glass below with the other. Food-safe, chemically resistant and practical.

Related guides

SLICING GUIDE

How to slice Jem

Jem uses polypropylene, a tap-mounted water path and joined G-code sections so the print can stay watertight and clean with very different geometry in one object.

WATER FILTERS

Jusy: the handheld water filter for filling one glass at a time

A practical PCTG filter used beside the tap: remove the cap, hold it under running water and fill a glass through the body.

POLYPROPYLENE

Why River uses polypropylene for bottles, Jem and Yuki ice packs

Polypropylene is slow and demanding to print, but it can make watertight one-wall parts, living hinges and food-contact objects when the workflow is controlled.

Also from River Family

Onda 3D printed TPU shoe
Barefoot 3D printed shoes

Onda

River’s best barefoot pattern for comfort and durability: a smoother inside surface that can be worn without socks, generated from direct Grasshopper toolpaths with interleaved semicircular curves per layer.

Taka 3D printed TPU shoe
Soled 3D printed shoes

Taka

The thin-soled version of Tora: the same small-grid barefoot idea with a fine sole added for more ground protection while keeping the upper light and breathable.

Roy 3D printed air purifier body
Air purifiers

Roy

A quiet, USB-powered air purifier that just does its job. Cleaner room air from a printed object that actually looks like it belongs on the shelf — no humming appliance, no exposed electronics.

Yuki 3D printed ice air cooler
Ice air coolers

Yuki

A full-size ice-pack air cooler built from printed parts, a quiet USB fan and a frozen water pack. Freeze the pack overnight, place it inside, and Yuki sends a steady cooler stream across the desk with very low power use.