This fluid shows its own turbulence. It is not liquid CFD
Mica flakes make currents visible almost immediately. The method replaces some computation with a physical experiment, but it does not replace measurement or dynamic similarity.
Archive
Craft · page 4
IRZ Craft archive, page 4.
Fifty Hours of Printing for One Pair of Clogs
A fully documented guide prints a real pair of clogs at home: 52 hours, 790 g of filament. The race against the factory was lost in advance — and the real story is your foot, which standard shoe sizes never covered.
50,000 rotis an hour already exist. So why a vending machine?
A University of Nottingham student designed Soi, a fresh chapati vending machine for Indian office canteens. The making is already automated, from kitchen counters to factory lines. What was missing is the address.
The galaxy's missing mass, measured in a backyard
A horn made of roof flashing, a filtered $45 amplifier, an SDR dongle: a former IEEE Spectrum editor says he detected dark matter from his backyard. Here is what he actually measured, and where the proof stops.
A domino clock with no moving parts
In 2010, Carbon Design Group flipped black and white dots with a custom-built coil actuator. The tabletop version swaps movement for light: what the reduction removes, what it keeps, and what it finally makes buildable.
CinderClock puts a 100 mm button on an alarm clock. It is not there for looks
The giant button dismisses the alarm without aiming. Around that gesture, CinderClock simplifies controls, separates modules and turns a failed enclosure into a manufacturing rule.
Twelve probe readings before the tire goes cold
Brian Smith spent forty years on track and one weekend building a recording tire pyrometer for under $120. The device turns a paddock ritual into a tuning method: twelve readings, three decisions.
This hiking stick stores tools in eight tubes. You have to take it apart to use them
TerraTactic turns the shaft into storage for a saw, knife, fire starter and other tools. Every module gained also adds an interface and access time.
This wrench puts a hammer exactly where others tell you not to strike
Japanese scaffold ratchets already tighten and align. Toyomitsu adds an intentional striking face where competing tools explicitly warn against hammering, encoding a whole work sequence in one shape.
Before the photo, Frank Kunert builds the lie by hand
Frank Kunert photographs places that do not exist. The interesting part happens before the shutter: foam board, paint, lighting and weeks of tiny decisions.