The video introduces the jigsaw, discussing the advantages of corded (continuous power) and cordless (portability) versions. It explains the 'shoe,' 'foot plate,' or 'base' of the jigsaw, which glides on the surface for clean cuts and notes that the blade extends below this plate. Most modern base plates can pivot for angled cuts, though this feature is not frequently used by the presenter.

The method for adding and removing blades varies by jigsaw model. Many modern jigsaws feature an orbital option, which adjusts the aggressiveness of the cut. An aggressive cut is faster but rougher, while a zero-orbital setting provides a cleaner cut. The video also covers adjusting the blade's speed (strokes per minute) which can be on the trigger or a separate dial.

When using a jigsaw, ensure adequate clearance beneath the workpiece due to the blade's long stroke to prevent damage. The orbital action, when engaged, makes the blade move back and forth in addition to up and down for a more aggressive but rougher cut. For clean cuts, it's best to leave the orbital setting on zero.

Jigsaws can cut both wood and metal, depending on the blade. Wood blades have aggressive, widely spaced teeth, while metal blades have fine, closely spaced teeth. The blade's speed is crucial: fast for softwoods like pine, and slower for hardwoods like maple or cherry to prevent burning the wood. Many jigsaws offer variable speed control directly on the trigger.

Apply light, consistent forward pressure when cutting, allowing the blade to do the work to avoid breaking it or straining the motor. Jigsaws excel at curved and rounded cuts, but avoid pushing the saw side-to-side as this can cause the unsupported blade to deflect, resulting in an uneven cut from top to bottom. For tight curves, make relief cuts.

Maintain a firm downward pressure on the jigsaw to counteract the blade's upward motion and prevent it from jumping, which can damage the workpiece. Jigsaws typically cut on the upward stroke, meaning the nice, clean side of your project should be facedown to minimize tear-out on the visible surface. Downward-cutting blades are available to reverse this effect, but require more firm pressure to control the saw.

There are two main blade shank types: T-shank and U-shank. T-shanks are preferred by the presenter for their sturdiness and ease of installation. Also, understand TPI (teeth per inch): higher TPI results in a cleaner but slower cut, while lower TPI provides a faster but rougher cut.

To cut a hole or shape in the middle of a project, start with a pre-drilled pilot hole slightly larger than the blade. For squares or rectangles, drill holes in opposite corners. The video also demonstrates a plunge cut technique for starting without a drill, which requires caution and both hands to avoid breaking the blade or damaging the project.

Keep the jigsaw's base plate smooth to prevent scratching the workpiece. If it's metal, periodically sand it with fine grit sandpaper or apply painter's tape as a temporary buffer. For long straight cuts, use a clamped straight edge (like a speed square or level) as a guide.

When starting a cut from the outside, gently place the blade against the wood before initiating a slow cut, gradually increasing speed as it engages. To cut sheet metal without jagged edges, sandwich the metal between two thin pieces of plywood. This technique takes longer but produces a cleaner finish.

Limit cutting thickness to about 1.5 inches for softwoods and 0.75 inches for hardwoods. Always prioritize safety by wearing ear and eye protection. The video concludes by encouraging viewers to share additional jigsaw tips in the comments.