AIR COOLERS
How Yuki ice-pack air coolers work
Fill the ice pack with water, freeze it overnight, then let Yuki move air around the cold pack for a cooler desk breeze.
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.
Ice-pack coolingYuki cools air by moving it around a frozen ice pack or bottle — simple, low-energy and easy to understand.
Printed + USBPrinted PLA parts, a quiet USB fan and ice from the freezer: no compressor, no refrigerant loop.
Yuki lineageYears and hundreds of prototypes shaped the airflow, shell and print workflow so the object feels simple when it is finished.
Related guides
SLICING GUIDE
How to slice Yuki Mini
Yuki Mini uses printed parts, a fan and a frozen water pack. The slicing work matters because airflow, overhangs and the ice-pack geometry need different priorities.
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.
Similar designs
Yuki Snowflake
The snowflake full-size Yuki: the same low-energy frozen-pack airflow in a more decorative shell, shared as refined G-code for cleaner internal overhangs.
Yuki Mini
A compact personal cooler for desks and small rooms: printed PLA parts, a quiet USB fan and a frozen water pack or bottle. It gives a close, steady stream of cooler, drier air without a compressor or refrigerant loop.
Bulbasaur Air Cooler
A playful Bulbasaur-style ice air cooler shell: the Yuki frozen ice-pack airflow idea turned into a characterful low-energy desk object.
Gengar Air Cooler
A Gengar-style ice air cooler shell with the Yuki formula inside: printed parts, a USB fan and frozen ice-pack airflow in a darker, mischievous desk object.
Also from River Family
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.
Water filters
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.