Selecting a scroll saw blade require you to understand the relationship between the saw blade and the material you are cutting. If you select the wrong blade for your project, it is possible the blade will snap while cutting into the workpiece. This snapping can occur because the blade encounters resistance while cutting into the wood.
If you select a blade that are not appropriate for the materials you are cutting, the blade may snap. You must always select the appropriate blade for your project since it is the only component of the scroll saw that makes contact with the workpiece. When selecting the blade, you must make a trade-off between the precision that you would like your saw to deliver and the power of the saw.
How to Choose the Right Blade for Your Scroll Saw
Blades with a higher number has a wider blade with teeth that are further apart. Thin blades is capable of providing precision to your wood because the thin blade can pivot as the saw turns. However, thin blades do not provide the strength to cut thick hardwoods.
When you use thin blades to cut thick hardwood, the thin blade will deflect from the saw’s force and will create a wandering saw blade. The teeth on the saw blade must match the materials that you are cutting. Standard blades are used for most woodworking projects, but there is specialty blades for specific materials.
For example, if you are cutting acrylics or resinous pine, the cut debris gets stuck in the teeth of the standard blades. Because the teeth become stuck in the debris, friction between the blade and the debris will make the wood melt. Skip tooth blades are used for cutting these materials because the teeth of the blades skip over the debris so that the blade does not get stuck and overheat.
Tear out on the workpiece may occur when using standard blades. These blades will mostly cut the wood on the upstroke of the saw. To prevent the saw from creating tear out on the bottom of the workpiece, use reverse tooth blades.
These blades will have teeth on the underside that point in the opposite direction of the rest of the saw blade. These reverse teeth will ensure that the bottom of the workpiece is also cut clean and does not develop jagged splinters. If you are cutting expensive veneered plywood, use reverse tooth blades to prevent damage to the veneered surface.
The way that you mount the blade will change the way that you will use the scroll saw. Plain end blades are used in almost any scroll saw machine and are available in various sizes. Pin end blades will allow you to change the blade faster then plain end blades.
However, pin end blades are bulkier than plain end blades. Pin end blades are not appropriate for projects that require a fine saw mark because pin end blades are bulkier and will mark the wood more. Your project will determine which type of blade end you use.
The speed at which you set the scroll saw will depend on the thickness of the material. You should decrease the strokes per minute as the thickness of the material increases. If you use a heavy blade at a high speed, the wood will burn as the blade cuts into it.
You will also dull the steel of the blade. Using a lower speed for cutting with the blade will allow the blade to shear the wood fibers. Low speeds will prevent the saw from rubbing against the wood fibers.
Using a low speed will prevent burn marks on the wood. No burn marks means you will not have to sand the wood. The tension of the blade is important.
If you do not set the tension correctly, the saw blade will wander on the workpiece. When plucking the blade, a correctly tensioned blade will produce a high-pitched sound. An improperly tensioned blade will make a dull sound.
If the blade produces a dull sound, the blade lacks the proper tension. A blade with low tension will wander while cutting the wood. Do not force the scroll saw to cut into the workpiece.
If you must force the workpiece to move forward, it means that your blade is too small or too dull. If the wood resists the blade, stop the saw and take a look at the type of blade that you are using. Select a blade that is appropriate for the type of wood grain in your project.
Selecting the correct blade number for your wood grain will ensure that you dont break your blade while using the scroll saw machine. You should of chosen the right blade to avoid problems. Selecting a blade will be alot easier if you know what your doing.
