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.
River Journal
Ice air coolers
AIR COOLERS
Do ice pack air coolers actually work?
Ice can cool the air near a desk, but it is not an air conditioner. Distance, airflow, ice mass and room expectations matter.
recommended design
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.
DESK COOLING
DIY desk air cooler with a USB fan and frozen water
A small fan, a frozen pack and a printed body can make a close personal breeze colder without pretending to cool the whole room.
recommended design
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.
AIR COOLERS
Why full-size Yuki uses post-processed G-code
The larger Yuki air coolers use direct Cura-generated and Python-refined G-code so the internal overhang prints cleaner than a normal model workflow.
recommended design
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.
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.
recommended design
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.
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.
recommended design
Bruk
A simple polypropylene bottle printed from joined Cura G-code sections. Its folding cap becomes the seal: when the cap bends into position, water stops coming out.
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.