Wide Enough to Be Seen, Conductive Enough to Work Wire does the electrical job on a fence but it does not do the visual one. Stock walk into a single strand they cannot see, riders duck under it too late and drivers clip it with a mirror. A 40 mm woven poly rope solves both problems at once: the ...

Air Movement at Building Scale Small propeller fans move air around themselves. A fan with a 1.83 m blade moves the air in the whole building. That difference is what makes this unit worth its frame: at 345 rpm the blade tips run a long way per revolution but slowly per second, so the fan shifts a ...

For Gates That Open Themselves There is a particular failure that shows up on farms with cattle rubbing along fence lines: the wire works its way out of an open hook, the gate drops, and the herd walks through. The cause is the handle, not the animals. This version closes the hook into a full loop, ...

A Simple Gate Handle, Made Properly Not every gateway needs a spring set. A short gap between two posts can be closed with a wire and a handle, and this is the handle for that job: a solid plastic body, a plated steel hook that will not rust into the wire, and a weight of 355 g that gives it enough ...