Single jack
A short-handled sledgehammer swung one-handed, usually around 3–4 lb.
Definitions
A short-handled sledge — typically 2 to 4 pounds — designed to be swung one-handed while the other hand holds a chisel, star drill, or spike. Originates in hardrock mining where a single jack miner drilled holes solo. Still standard in masonry, demo, and anywhere you need controlled heavy hits.
Single jack In A Sentence
Origin & Usage
From 19th-century American hardrock mining: a 'single jacker' worked alone, holding the drill steel in one hand and swinging a short sledge with the other. 'Double jacking' was a two-man team.
People Also Ask
What is a single jack?
It's a short-handled sledgehammer meant to be swung with one hand, usually weighing around 3 to 4 pounds.
How do you use single jack in a sentence?
"Grab the single jack and drive that stake in."
Why is it called a single jack?
The "single" refers to it being swung one-handed, as opposed to a heavier two-handed sledge.
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