Archive

Craft · page 4

IRZ Craft archive, page 4.

Person walking outdoors wearing white 3D-printed clogs decorated with colorful butterfly charms

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.

Illustration of the improvised radio telescope: an inverted pyramidal horn sitting on a metal enclosure, connected by cable to a laptop

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.

Three black domino tiles on a base showing 9:53 in glowing blue dots

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.

A Toyota MR2 on an autocross course with all twelve tire temperature readings overlaid on the photo

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.