Is a keyhole saw the same as a jab saw?

Yes, in many modern contexts, especially in drywall work, the terms are used interchangeably, though a jab saw may have a coarser tooth pattern.

What materials can a keyhole saw cut?

Primarily wood, drywall, and some plastics. It is not suitable for cutting metal.

Why is it called a 'keyhole' saw?

Its original and classic use was for cutting the keyhole shape in wooden doors for locks, where a narrow blade was needed to start the cut from a single drilled hole.

Can I use a keyhole saw to cut a straight line?

While possible for short distances, it is not ideal. It is designed for curved or internal cuts. A backsaw or tenon saw is better for straight, precise cuts.

keyhole saw

Low

UK/ˈkiː.həʊl ˌsɔː/US/ˈkiː.hoʊl ˌsɔː/

Technical/DIY

My Flashcards

Definition

Meaning

A small handsaw with a narrow, pointed blade, used for cutting small or intricate shapes, especially for starting cuts in the middle of a piece of wood.

A specialized saw designed for cutting curves and openings, such as keyholes or internal cutouts, where the blade can be inserted through a drilled hole.

Linguistics

Semantic Notes

The term is a compound noun that is strongly tied to its functional design (for cutting keyholes) and remains a tool-specific term with little metaphorical extension.

Dialectal Variation

British vs American Usage

Differences

The term is identical and understood in both varieties. The tool might occasionally be referred to more generically as a 'padsaw' or 'compass saw' in the UK, though these are not perfect synonyms.

Connotations

Connotes manual woodworking, carpentry, and detailed craftwork in both regions.

Frequency

Equally low-frequency in both dialects, used primarily in hardware, woodworking, and DIY contexts.

Vocabulary

Collocations

strong

use a keyhole sawblade of a keyhole sawcut with a keyhole saw

medium

narrow keyhole sawsharp keyhole sawhandle of the keyhole saw

weak

old keyhole sawhandy keyhole sawbuy a keyhole saw

Grammar

Valency Patterns

[Someone] uses a keyhole saw to [action]The [material] was cut with a keyhole saw

Vocabulary

Synonyms

Strong

narrow-bladed sawpiercing saw

Neutral

padsawcompass saw

Weak

hand sawjigsaw (in some contexts)

Vocabulary

Antonyms

chainsawcircular sawbroadaxe

Phrases

Idioms & Phrases

“[No common idioms for this specific tool]”

Usage

Context Usage

Business

Rare, only in specific retail (hardware) or manufacturing contexts.

Academic

Very rare, possibly in historical or technical design papers.

Everyday

Used by hobbyists, DIY enthusiasts, and carpenters.

Technical

Standard term in woodworking, carpentry, and tool manuals.

Examples

By Part of Speech

verb

British English

He keyhole-sawed the opening for the pipe.
I need to keyhole-saw this panel.

American English

She keyhole-sawed through the drywall.
We keyhole-sawed the plywood to fit the outlet.

adverb

British English

He cut keyhole-saw style through the centre.
She worked keyhole-saw carefully around the edge.

American English

Cut keyhole-saw slowly to avoid breaking the blade.
He proceeded keyhole-saw, making an internal cut.

adjective

British English

The keyhole-saw cut was neat and precise.
He used a keyhole-saw blade from his toolkit.

American English

The keyhole-saw technique is useful for outlets.
A keyhole-saw attachment is available.

Examples

By CEFR Level

This is a keyhole saw.
The saw is small.

I used a keyhole saw to make a hole in the wood.
You need a keyhole saw for this job.

After drilling a pilot hole, he carefully used the keyhole saw to enlarge the opening for the cable.
A keyhole saw is indispensable for fitting a new electrical box into an existing wall.

The craftsman selected a fine-toothed keyhole saw to execute the intricate marquetry, ensuring minimal tear-out on the veneer.
While a jigsaw is faster for curves, the control afforded by a traditional keyhole saw is unmatched for certain fine joinery tasks.

Learning

Memory Aids

Mnemonic

Imagine the shape of an old-fashioned metal keyhole. A keyhole saw has a thin, pointed blade like the key's bit, designed to cut that very shape.

Conceptual Metaphor

PRECISION IS A NARROW BLADE.

Watch out

Common Pitfalls

Translation Traps (for Russian speakers)

Avoid a calque like 'дырка от ключа пила'. The correct translation is 'ножовка с узким полотном' or specifically 'обушковая пила' (for a padsaw).

Common Mistakes

Confusing it with a 'jigsaw' (power tool) or a 'hacksaw' (for metal).
Using 'keyhole' as an adjective incorrectly, e.g., 'keyhole cutter'.
Misspelling as 'key hole saw'.

Practice

Quiz

Fill in the gap

To install the new wall socket, he first drilled a hole and then used a to cut out the rectangular shape.

Multiple Choice

What is the primary design feature of a keyhole saw?

FAQ

Frequently Asked Questions

: Yes, in many modern contexts, especially in drywall work, the terms are used interchangeably, though a jab saw may have a coarser tooth pattern.
: Primarily wood, drywall, and some plastics. It is not suitable for cutting metal.
: Its original and classic use was for cutting the keyhole shape in wooden doors for locks, where a narrow blade was needed to start the cut from a single drilled hole.
: While possible for short distances, it is not ideal. It is designed for curved or internal cuts. A backsaw or tenon saw is better for straight, precise cuts.