How Does A Jigsaw Work?

A jigsaw is a power tool that any carpenters, construction professionals, and DIYers should have. Aside from the conventional saw, a jigsaw is a tool of necessity, especially if we are talking about cutting objects. Of course, you won’t be able to take advantage of this tool without knowing how does a jigsaw work.

This power tool is effective in cutting curves in wood. However, if you use the right blade, this saw can cut through metals and ceramic tiles. This is how powerful a jigsaw can be! Despite that, a jigsaw is still one of the safest tools that you can use. With proper supervision, you can even let your child use it! It doesn’t look too scary compared to the monstrous chainsaw and circular saw!

One of the things that you will appreciate about a jigsaw is that it can make bevel cuts precisely. If you are trying to make a fancy furniture, then bevel cuts are necessary. Therefore, there is a necessity for you to have a jigsaw.

Sometimes, you would just wonder how this tool can do all those applications. For a small power tool, this one can do a lot of heavy duty applications! Moreover, doing all of these won’t cause fatigue to its user! If you are curious about how this tool works, then you are reading the right article! We will know show the mechanism of a jigsaw!

Let’s get started!

How Does A Jigsaw Work?

As mentioned, a jigsaw is a variant of conventional saws. This one has a motor, in which is powered either by electricity or a set of battery. The motor drives the narrow blade at a tremendous speed, on a up-and-down motion. Usually, the cutting speed that a jigsaw can do ranges from 0 to 3,200 stroke per minute (SPM). That is insanely fast already! You can imagine that the movement of the blade of the jigsaw is similar to the needle used by a sewing machine.

The jigsaw has a metallic housing. Inside there, you can see that motor that is attached to the blade. The connection is made through a series of eccentric gears. Specifically, this type of gears have axes that are not at the center.

The eccentric gears are the ones responsible for the conversion of the rotary motion produced the motor. From rotation, the gears convert it to become a rapid vertical movement of the blade holder. In return, the blade holder enables the blade to do a fast and repetitive up and down movement of the blade.

Typically, the blade of this saw can do upstroke cuts. This is due to the design of the blade, in which its teeth are pointing up. Therefore, if you need to a clean and precise cut, you should turn over the object that you are cutting. With this, you will be able to cut in the back without suffering from splinters smoothly!

While you are using this blade, its shoe or base is mounted on the workpiece. This kind of scheme lets you cut with stability and precision. The base also acts as a support so that you can cut straight. Usually, the base is made from a die-cast metal or aluminum.

Most of the jigsaws you can see in the market today have a variable speed dial. This feature enables you to adjust the speed of your blade, depending on the material you are cutting. If you are cutting a hard object, you should lower the speed. When the material you are working is soft, bombard it with a high-speed blade! Of course, you can make the most out of this feature if your jigsaw has an orbital action function. This component aids in the precision and power of your cuts.


As you can see, the jigsaw is a simple tool. It does not involve a complicated operation scheme, unlike some other tools. By learning how does a jigsaw work, you can be able to maximize its full potential. Moreover, understanding how each of its parts function will also teach how to maintain this tool correctly. In this way, you can extend the lifespan of this saw! That’s a minus expense on your part!

If this article sparked your interest in jigsaws, then we have a list of the top 5 best jigsaws here.