HOW STUFF WORKS
QUIZZES

Quiz: Do you know how a nail gun works?
by Staff
If you're a home maintenance buff, you know that every second counts. And that's why, instead of spending your whole day hammering in nails manually, you know it's worth it to use a nail gun. Nail guns are trusty, reliable, safe and easy to use. But before you get your finger on the trigger, take this quiz to learn how they work.

### What is the advantage of using a nail gun?

• cheaper than a regular hammer
• saves time
• can double as a screwdriver

### What is the maximum speed that a nail gun can hammer in a nail?

• 700 feet (214 meters) per second
• 1,400 feet (427 meters) per second
• 2,100 feet (640 meters) per second

### What are the two functions of nail gun with a spring-loaded design?

• It measures the depth needed for each nail and hammers it in during one mechanized blow.
• It hammers the nail in with two swift blows and smoothes down the nail head.
• It concentrates hammering force into one blow and then reloads.

### Why are there two axles in a nail gun?

• One moves a scooper plate; the other moves a gear train.
• One moves a motor; the other moves a hammer.
• One moves a spring; the other moves a lever.

### What part of the mechanism drives the hammer downward at top speed?

• the scooper plate
• a compressed spring
• two compressed springs

### How are nails held together in the most common kind of nail-loading mechanism?

• strung together end to end
• glued together in a long strip
• held together in a compact bunch

• help
• hindrance
• neither

### The solenoid is a kind of ________.

• electromagnet
• conventional hammer
• gun

### With an electromagnet, can you change the orientation of the poles?

• Yes, but doing so doesn't have any effect on anything.
• Yes, and you can thus reverse the current flow.
• No, they are permanent.

### What is the disadvantage of a solenoid nail gun?

• It doesn't work without solar power.
• It's power is limited.
• It runs out of power often and needs recharging.

### What creates the hammering force of a pneumatic nail gun?

• compressed air
• atomic fusion
• nuclear fission

### Where does the pneumatic nail gun get the constant supply of air from?

• The piston cylinders draw air in from the surroundings.
• Self-refilling air cans are attached.
• It doesn't; the supply of air must be continually replenished.

### Which of these is true about the pneumatic nail gun?

• It is slow.
• It is limited in power.
• It is cumbersome.

### What's inside the gas reservoir of a combustion nail gun?

• inert gas
• flammable gas
• compressed air

### What is the small explosion inherent in the triggering of the combustion nail gun?

• A charge is sent to the spark plug, which ignites the gas and causes combustion.
• The flammable gas mixes with regular air, causing an explosion.
• The downward motion of the nail being hammered in makes an explosion.

### Why is there a second trigger in a combustion nail gun?

• It's a backup in case the first trigger fails.
• It gives the gun more force.
• It's a safety device.

### How does an imbalance of atmospheric pressure drive the nail gun?

• When there is greater pressure below the piston, it moves downward.
• When there is greater pressure above the piston, it moves downward.
• When there is greater pressure above the piston, it moves upward.

### Why do nail guns need safety devices?

• so you don't hurt yourself while using the nail gun
• so you don't accidentally shoot a nail into the air
• so a nail doesn't get fired if you accidentally drop the nail gun

### What is the reason that manufacturers developed a sequential trip system?

• because the market wanted something new
• because old models of nail guns wore out very quickly
• because the nail gun's regular safety catch wasn't foolproof

### How does the sequential trip system work?

• You must release then hold down the trigger every time you fire the nail gun.
• You have to undo a safety catch with one hand and then press the trigger with the other hand.
• You open a valve and hold down a trigger whenever you fire a nail.
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