- Jigsaw (power tool)
:"This article is about the power tool, for other uses see
A jigsaw is a tool used for cutting arbitrary
curves, such as stenciled designs or other custom shapes, into a piece of wood or similar material. It is usually used in a more artistic fashion than other saws, which only cut in straight lines and exist mainly to cut pieces of woodto length for building structure. In this way, it is similar to the raspand the chisel.
Traditional jigsaws are
hand saws, consisting of a handle attached to a small, thin blade. The first jigsaw puzzles were made using this kind of unpowered saw. More modern jigsaws are power tools, made up of an electric motorand a reciprocating saw blade.Most carpenters would have a jigsaw as part of their tool kit. A jigsaw can be used to cut a variety of materials; Man made boards like MDF and Ply, and also metal and plastic. Each material has a specific blade type.The most useful feature of the modern jigsaw is "stroke" which is used to alternate between fine cutting and rough cutting. Most jigsaws have variable speed control which will aid the cutting of the chosen material.When cutting the plate or sole of the jigsaw, it must be kept firmly flat on the board being cut for safety and a better finish. It is very easy to cut the electric cord on a jigsaw as by its design there is no guard in front of the blade so care must be taken when using one.A pilot hole is normally drilled for example if one is cutting a circle out of a sheet of material and then the blade is inserted into this pilot hole before cutting.To achieve a straight cut freehand with a jigsaw is difficult even when a guide is used unless a (generally more expensive) pendulum jigsaw is used.Plunge cutting with a jigsaw requires a high degree of skill and should be practised using scrap material first.A jigsaw with a bevel function allows angles typically of up to 45 degrees relative to the normal vertical stroke. Sometimes this functionality is implemented by loosening screws on the adjustable base plate, whereas more expensive models may have a quick release mechanism or even a quickly set angle dial.
In the past, what are now usually called
scroll saws were often referred to as jig saws.
There are two main blade types, standard and bosch (or T-shank). A standard blade has a hole in it. Bosch brand blades have bumps along the edges which enable blades to be changed quickly. Starrett brand produces a unified blade the fits into either bosch or standard jigsaws.
high endjigsaws are produced by (in alphabetical order):
AEG(=Milwaukee, =Atlas Copco)
Black & Decker
* [http://www.taunton.com/finewoodworking/pages/w00097.asp Types of Jigsaws]
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