the.com/nailer

a tool that fires nails faster than your hand could ever flinch.

means A nailer is a power tool — pneumatic, electric, or gas-powered — that drives nails into material with a single trigger pull; the word also covers anyone whose job is to fasten things with nails.

from Straight from "nail," which comes from Old English "nægel," the word for both the metal spike and the keratin at your fingertips — the same dual sense survives in German "Nagel." Add the agent suffix "-er," the same one that turns "bake" into "baker," and you get "nailer," originally the person who hammered, later handed off to the machine that hammers for them.

firing speed
Some shoot two to three nails per second.
power source
Driven by compressed air, gas, or battery flywheels.
safety design
Most require contact tip pressed before firing.
history
Pneumatic nailers debuted around 1950 for floor work.
recoil
Each shot kicks back like a tiny punch.
for instance

dewalt dcd777c2 — best-selling cordless nailer kit with over 2 million units sold worldwide

pneumatic brad nailer — stanley bostitch model 23 gauge, standard tool in professional carpentry since 1994

paslode im250a — top-selling fuel-powered framing nailer used in residential construction across north america

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