How to Use a Jigsaw for Clean Curves

Jigsaws are brilliant for curves, but they need proper technique to produce clean cuts. Here's how to get the best results.

Blade Selection

The right blade matters more than the saw:

• Teeth per inch (TPI) - More teeth = smoother but slower cut. Fewer teeth = faster but rougher.
• Blade width - Narrow blades cut tighter curves. Wide blades track straighter.
• Material-specific - Wood, metal, and laminate blades have different tooth geometry.

General Guidance

• Tight curves: 10 TPI, narrow blade
• General wood: 6-10 TPI, medium blade
• Fast rough cuts: 6 TPI, wide blade
• Laminate/chip-free: downcut or fine blade
• Metal: dedicated metal-cutting blade

Machine Setup

Orbital Action

Most jigsaws have orbital settings (usually 0-3). The blade moves forward on the upstroke as well as up and down.

• 0 (no orbital) - Cleanest cuts, slowest, best for metal and fine work
• 1-2 - Good balance for general wood
• 3 - Fastest, roughest cuts for quick work

For clean curves, reduce or eliminate orbital action.

Speed

Variable speed is useful. Slower speeds give more control on curves. Faster speeds suit straight cuts and soft materials.

Technique

Mark Your Line

Clear, visible line is essential. Pencil, marking knife, or masking tape all work. The better you can see the line, the better you'll follow it.

Support the Work

Vibration causes chip-out. Support the workpiece close to the cut line. Clamp securely - sawing against a moving workpiece is frustrating and dangerous.

Start Correctly

Begin with the blade NOT touching the work. Let it reach full speed, then approach the material. Starting in contact can damage the blade and workpiece.

Following Curves

• Move steadily - don't rush
• Let the blade do the cutting - don't force
• Turn the saw, not just the blade direction
• For tight curves, make relief cuts first
• Keep the base plate flat on the surface

Relief Cuts

For tight curves, cut from the edge to the curve line at several points. These relief cuts let waste fall away as you cut the curve, preventing binding.

Reducing Chip-Out

Jigsaws cut on the upstroke, so chip-out occurs on the top surface. Options:

• Cut with good face down
• Use masking tape over cut line
• Score the line with a knife before cutting
• Use downcut blade (chips go down)
• Use anti-splinter insert in base plate

Internal Cutouts

For holes that don't start from an edge:

1. Drill a starter hole inside the waste area
2. Insert jigsaw blade through the hole
3. Cut to your line and follow it around

Some jigsaws can plunge-cut (start in the middle), but drilling is easier and cleaner.

Common Mistakes

• Wrong blade for material or curve tightness
• Too much orbital action for clean cuts
• Forcing the blade - let it cut at its own pace
• Poor workpiece support - causes vibration and chip-out
• Trying to follow curves that are too tight for the blade

Find jigsaws and blades in our powered saws collection.