Yuki is not a bottle. It is an ice-pack air cooler: printed parts, a quiet USB fan and a frozen water pack working together as one desk object.
The pack is filled with water, frozen overnight, then placed inside. The fan moves air around the cold pack and sends a cooler stream toward the person sitting nearby.
That makes Yuki different from an air conditioner. It does not refrigerate a whole room; it creates localized personal airflow for a desk, shelf or small space. The right expectation is a cooler breeze, not climate control.
The shell matters because it turns the frozen core into a cleaner object. Instead of a raw ice pack sitting beside a fan, the parts guide the airflow and make the cooling idea clear at a glance.
The family changes scale and mood without changing the principle. Full-size Yuki is the bigger desktop version, Snowflake makes the shell more decorative, and Mini keeps the same frozen-pack airflow in a smaller body.
The original Yuki page also frames the material choice simply: PLA printed parts, a quiet USB fan and ice from the freezer, with no compressor and no refrigerant loop.
Public comments on the Yuki page describe the finished object as “pretty awesome,” “perfect for the summer,” and a steady stream of cool, dry air that can make a hot room more tolerable. That is the right promise: personal comfort near the object, not whole-room air conditioning.
Yuki is strongest when explained simply: freeze water overnight, put the pack inside, let the USB fan move air around it, and use the cooler stream where you actually sit.
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.
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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.
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