A jab saw is a small hand saw with a pointed tip and coarse teeth, most commonly used to cut drywall. It is also called a drywall saw, keyhole saw, or sometimes a pad saw.
The pointed tip lets you “jab” the saw into drywall to start a cut without drilling a pilot hole. That makes it useful for cutting openings for electrical boxes, vents, plumbing access, and drywall repairs.
How a Jab Saw Works
A jab saw cuts by hand, using short push-and-pull strokes. The teeth are usually coarse so they can cut through gypsum drywall quickly.
The pointed tip is the key feature. It lets you puncture the drywall and start the cut from the middle of a panel instead of starting from an edge.
Most jab saws have:
- Pointed tip – Starts holes in drywall
- Coarse teeth – Cuts drywall quickly
- Rigid blade – Helps push through material
- Handle – Gives control while cutting
What a Jab Saw Is Best Used For
Best for:
- Cutting outlet box openings in drywall
- Making small access holes
- Cutting drywall around plumbing or vents
- Enlarging existing holes
- Quick drywall repair work
Not great for:
- Long, perfectly straight cuts
- Cutting studs or framing lumber
- Cutting metal
- Finished work where dust and rough edges are a problem
- Areas where wiring or plumbing may be directly behind the drywall
For longer cuts, a utility knife, oscillating multi-tool, or drywall router may be better.
How to Choose a Jab Saw
Basic drywall repairs?
Use a standard fixed-blade jab saw. It is cheap, simple, and reliable.
Working in a tool bag or small space?
A folding jab saw is safer to store because the sharp tip and teeth fold into the handle.
Want cleaner control?
Look for an ergonomic handle and a rigid blade. A flimsy blade can wander or bend.
Cutting more than drywall?
Some jab saws are marketed for drywall, plastic, and thin wood, but always match the saw to the material. Drywall teeth are aggressive and may leave rough edges in other materials.
How to Use a Jab Saw
- Mark the cutout clearly.
- Check for wires, pipes, or studs behind the wall.
- Place the tip inside the waste area, not directly on your final line.
- Push the tip through the drywall carefully.
- Saw toward your cut line.
- Cut along the marked line with short controlled strokes.
- Clean up rough edges with a utility knife.
Pro Tips
- Cut slightly inside your line, then trim to fit.
- Use a utility knife to score the paper face first for cleaner edges.
- Keep your free hand away from the backside of the wall.
- Go slowly near electrical boxes.
- If you are unsure what is behind the drywall, stop and investigate before cutting.
Common Mistakes
- Jabbing blindly into a wall — you can hit wires, pipes, or insulation.
- Cutting the hole too large — oversized drywall openings are harder to repair.
- Using it for long cuts — jab saws are best for openings, not full-sheet cuts.
- Starting directly on the finished line — the first puncture can tear the drywall paper.
- Forcing the blade — aggressive pressure can break drywall or make the cut ragged.
Recommendations
Basic Recommendation:
A standard fixed-blade drywall jab saw is enough for most homeowners.
Best Value Recommendation:
A folding jab saw is a better choice if you keep tools in a drawer, bag, or small kit because the blade stores safely.
Prosumer Recommendation:
A jab saw plus oscillating multi-tool combo is ideal for frequent drywall work. Use the jab saw for rough openings and the oscillating tool for cleaner precision cuts.
Best Uses For
- Drywall outlet openings
- Access panel cuts
- Small ceiling or wall repairs
- HVAC register openings
- Plumbing access
- Cutting around boxes or fixtures
Fixers Club Tip
A jab saw is simple, but the risk is what you cannot see. Before cutting drywall, always think about what could be inside the wall cavity.