introduction

Saw blade is one of the important tools we use in daily processing.

Maybe you are confused about some parameters of the saw blade such as material and tooth shape. Don’t know their relationship.

Because these are often the key points that affect our saw blade cutting and selection.

As industry experts, in this article, we will give some explanations about the relationship between the parameters of saw blades.

To help you better understand them and choose the right saw blade.

Table of Contents

• Common Material Types

  
  

• 1.1 Woodworking

• 1.2 Metal

• Tip of Use and Relationship

• Conclusion

Common Material Types

Woodworking：Solid wood（ordinary lumber ） And Engineered wood

Solid wood is a term most commonly used to distinguish between ordinary lumber and engineered wood, but it also refers to structures that do not have hollow spaces.

Engineered wood products are manufactured by binding together wood strands, fibers, or veneers with adhesives to form a composite material. Engineered wood includes plywood, oriented strand board (OSB) and fiberboard.

Solid Wood:

Round wood processing such as: fir, poplar, pine, press wood, imported wood and miscellaneous wood, etc.

For these woods, there are usually processing differences between cross-cutting and longitudinal cutting.

Because it is solid wood, it has very high chip removal requirements for the saw blade.

Recommended and relationship:

• Recommended Tooth Shape: BC teeth, a few can use P teeth
• Saw Blade: multi-ripping saw blade. Solid wood cross-cut saw, Longitudinal cut saw

Engineered Wood

Plywood

Plywood is a composite material manufactured from thin layers, or “plies”, of wood veneer that are glued together with adjacent layers, having their wood grain rotated up to 90° to one another.

It is an engineered wood from the family of manufactured boards.

Features

This alternation of the grain is called cross-graining and has several important benefits:

• it reduces the tendency of wood to split when nailed at the edges;
• it reduces expansion and shrinkage, providing improved dimensional stability; and it makes the strength of the panel consistent across all directions.

There is usually an odd number of plies, so that the sheet is balanced—this reduces warping.

Particle Board

Particle board,

also known as particleboard, chipboard, and low-density fiberboard, is an engineered wood product manufactured from wood chips and a synthetic resin or other suitable binder, which is pressed and extruded.

Feature

Particle board is cheaper, denser and more uniform than conventional wood and plywood and is substituted for them when cost is more important than strength and appearance.

MDF

Medium-density fibre (MDF)

is an engineered wood product made by breaking down hardwood or softwood residuals into wood fibre, often in a defibrator, combining it with wax and a resin binder, and forming it into panels by applying high temperature and pressure.

Feature：

MDF is generally denser than plywood. It is made up of separated fibre but can be used as a building material similar in application to plywood. It is stronger and denser than particle board.

Relation

• Tooth Shape: It is recommended to choose TP teeth. If the MDF processed has a lot of impurities, you can use a TPA tooth shape saw blade.

Metal Cutting

• Common materials：low alloy steel, medium and low carbon steel, cast iron, structural steel and other steel parts with a hardness below HRC40, especially modulated steel parts.

For example, round steel, angle steel, angle steel, channel steel, square tube, I-beam, aluminum, stainless steel pipe (when cutting stainless steel pipe, special stainless steel sheet must be replaced)

Features

These materials are commonly found on job sites and in the construction industry. Automobile manufacturing, aerospace, machinery production and other fields.

• Processing: Focus on efficiency and safety
• Saw blade: cold saw is best or abrasive saw

Tips of Use and Relationship

When we choose materials, there are two aspects to pay attention to.

1. Material
2. Material Thickness

• The 1 point determines the rough type of saw blade and the processing effect.

• The 2 point is linked to the outer diameter and number of teeth of the saw blade.

The greater the thickness, the greater the outer diameter. The formula of saw blade outer diameter

It can be seen that：

The outer diameter of the saw blade = (processing thickness + allowance) * 2 + diameter of the flange

Meanwhile，The thinner the material, the higher the number of teeth. The feed speed should also be slowed down accordingly.

Relationship between tooth shape and material

Why do you need to choose a tooth shape?

Choose the Correct tooth shape and the processing effect will be better. Better matches the material you want to cut.

Tooth Shape Selection

1. It is related to chip removal. Thick materials require a relatively small number of teeth, which is conducive to chip removal.
2. It is related to the cross-section effect. The more teeth, the smoother the cross-section.

The following is the relationship between some common materials and tooth shapes:

BC Tooth Mainly used for cross-cutting and longitudinal cutting of solid wood, sticker density boards, plastics, etc.

TP Tooth Mainly used for hard double veneer artificial panels, non-ferrous metals, etc.

For solid wood, choose BC teeth,

For aluminum alloy and artificial boards, choose TP teeth

For artificial boards with more impurities, choose TPA

For boards with veneers, use a scoring saw to score them first, and for plywood, choose B3C or C3B

If it is a veneered material, generally choose TP, which is less likely to burst.

If the material has a lot of impurities, TPA or T teeth are generally chosen to prevent tooth chipping. If the material thickness is large, consider adding G (lateral rake angle) for better chip removal.

Relationship with The Machine:

The main reason for mentioning machines is that what we know as a saw blade is a tool.

The saw blade ultimately needs to be installed on the machine for processing.

So what we need to pay attention to here is. The machine for the saw blade you choose.

Avoid seeing the saw blade and the material to be processed. But there is no machine to process it.

Conclusion

From the above, we know that material is also an important factor affecting the choice of saw blades.

Woodworking, solid wood, and man-made panels all have different focuses. BC teeth are mainly used for solid wood, and TP teeth are commonly used for panels.

Material thickness and material also have an impact on tooth shape, saw blade outer diameter, and even machine relationships.

By understanding these things, we can use and process materials better.

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