Name: POCKET KNIVES | How It's Made
Uploaded: 2020-03-26T05:58:30.000Z
Duration: 4 min 48 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Advanced passive voice

It can contain several blades and tools, all of which could be retracted into the handle to make pocket knives.

Rollers feed a strip of stainless steel through a series of dies like powerful Kate cutters.

They cut holes for installing them in the handle.

Stamp on the company logo informed grooves with which a user congrats.

A trip into a fiery furnace hardens the metal.

It's the first step in heat treating the blades Once they're cool.

An operator places blade shapes on the magnetized rim of a rotating carousel.

It moves the base of the blades under an induction heating coil, the heat and Neil's that offend, making it pliable enough to bend an easier to fit in the pocket.

A robot now transfers the shape into a computerized grinder that devils the edge but leaves it.

Ceramic pellets polished the blades with paste for 32 hours.

To achieve a mirror finish a magnetic belt, collects them and transfers them to the next station.

Meanwhile, a rocking cutting tool carves ridges into a piece of cow shinbone.

Shinbone will adorn the pocket knife handle.

They submerge a bag of rich shin bones into a vat of dye, tenting them a vibrant green.

No cow shin bone is just one of many materials used to make pocket knives look attractive.

Here they're riveting, a handle to the pocket knife killed.

Hypoxia desist to decorate these pieces of bone with metal in Lee that's embellished with flourishes on lettering.

Trim the excess bone so that it's flush to the metal liner.

Next, they place a spring on the underside of the bone and brass part, followed by a rocker arm on the spacer finish off this sandwich with another bone covered brass liner, they insert blades in one end, dipping each one in oil to lubricate it.

They place different blades in the other end of the pocket knife on Dr a pin.

Into that stack, a new Matic tool flattens the ends of the pins, riveting all the parts together.

Sometimes they pound a shim between the layers toe open them up so the knives come move freely.

It's a little fine tuning growing down the pinheads to blend them to the rest of the pocket knife.

They bevel the edges against a belt sander until they're sharp enough to come.

After sharpening, they retract all the blades on both the knife until it shines here, a laser etches and insignia into the bone handle.

 They enhance the engraving with paint, and now you have a pocket knife that really makes a point. 