Screw threads are another simple machine ... either with a thread cutting tool translated lengthwise against a rotating workpiece, or with a tap (for internal threads) or a die (for external ...

"Then cut it where you want it and reverse it to get the threads right again," he says. For fast, accurate results, I like to use my rotary tool to cut screws to length. It's Ricalde's first ...

the unthreaded shoulder extends beyond the surface into which the thread embeds. The shoulders give the screws their versatility by acting as shafts or dowels for rotating items such as bearings ...

A nut on each section of thread is prevented from rotating in relation to the other, and when the screw is turned their relative position will change only as much as the difference between the two ...

The turret on a lathe is a rotatable round vise that ... and introduces tooling to shape the head of the screw, another tool from the side to cut the threads, then from the front a disc to slice ...

Woodworking screws are actually quite the varied microcosm, with a massive number of combinations of heads, drives, threads, points, and materials. It's easy to just pick a screw and decide to ...

LOOK AT THAT. THE BOTTOM IS HELD WITH A WOODEN SCREW DOWN THERE. THREADS IN WOOD. YOU LOOK AT CIDER PRESSES, WINE PRESSES. HERE'S A PLANE THAT USES SCREW ADJUSTMENTS ON A WITCHET. THIS HAS SCREWS ...