There are two types of scroll saw patterns that are common: spiral and tooth scroll. A spiral pattern has teeth that alternate in a spiral motion, cutting a piece of wood at a time. The teeth of a tooth scroll blade alternate linearly, cutting a series of teeth along the same plane as the spiral. Tooth scroll saw patterns are used more commonly in woodworking applications. Here, you’ll learn what you need to know about the various scroll saw patterns and how to choose a scroll blade for your project, no matter what type of project it is.
In order to understand the different types of scroll saws, it’s first important to understand how these tools work. When you look at a scroll saw, you’ll see a flat plate (or blade) at the end of a long metal rod. At the far end of this plate is a thin metal wire that is held in a slot. This thin metal wire is called a sprocket. The blade is fixed to the top of the sprocket. The thin metal wire runs up the spine of the saw table, passing through the teeth at the very end of the blade.
Most scroll saws are in a horizontal position, with the teeth of the blade lined up straight on the spine. However, many saw tables feature a vertical position. When you look at the back of the saw table with one of these vertical blades, you’ll see two grooves cut into the metal. These grooves are not a traditional saw cut. Instead, they are vertical ridges, which serve to guide the cutting of the spiral blades as they spin around the vertical shaft. If the spine was exposed, it would expose the teeth of the spiral blades cutters, making them difficult to hold on to, causing the saw table to tip over.
There are two types of scroll saw Blades: the hard scroll saw blades cut hard materials like hard rubber and metal with greater ease, but they also tend to cut faster. The softer scroll saw blades are generally easier to use on soft woods and lighter weight than the hard ones, but they can still be very effective on harder woods and materials. The most important things to keep in mind when choosing a scroll saw blade is how your scroll saw will be used, and how your saw will be held when in use.
The type of blade – the length of the blade – is dictated by the size. The bigger the blade the smaller the scroll. For example, if the saw is set up to cut a forty inch circular pattern then the blade should be long enough to cut that entire pattern without having to stop and start all over again. The most common saw sizes are eight, ten, twelve and fourteen-inch rollers. scroll saws can be fitted with scroll blade extensions which will extend the size of the blade up to twenty-four inches, allowing it to cut more material.
How your scroll saw is held is very important in terms of how to choose scroll saw patterns. If you have a hand-operated scroll saw, like the kind you see in woodworking shops, then it will hold the scroll saw blade in a way that lets the saw slide along the work surface. Many scroll saw projectors have been designed with the sliding function. The scroll saw itself will slide along a straight rail with the teeth facing up (or in some cases down). Some scroll saw projectors have been designed with a side-cutting feature, which lets the scroll run parallel to the work surface. Having a non-slip grip on the scroll saw is also recommended.
These three factors above are the main ones to look for when shopping for scroll sawing machine tools. Of course there are many other factors to consider as well, but this overview will give you a good starting place for comparison shopping. scroll saw patterns can vary widely from project to project, as well as the types of materials the patterns can be made of and the kinds of saw blades that are suitable for cutting them. Once you know the basic things to look for when purchasing, choosing quality products will be a piece of cake.