The ideal jigsaw should have a higher SPM or Strokes Per Minute. Moreover, it should have variable speeds to allow you to vary the jigsaw speed according to the kind of cuts you would like to make and the material you are cutting. With the variable speed option, you will have greater control when cutting curves.

Jigsaws work best for cutting softwood that’s no more than 1-1/2 inches thick and hardwood up to 3/4 inch thick. Jigsaw blades tend to bend when cutting curves in thicker boards, leaving a beveled edge rather than a square one. Use a sharp blade to keep the cut square and avoid forcing the saw through the cut.