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How to measure TPI?

How to measure TPI

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Measuring TPI When purchasing saws, the TPI will usually be listed in the product spec. However, there may come a time when you don’t have this information to hand, and need to find the number yourself.

Please note: When measuring TPI, you should always begin the measurement in the centre of the gullet.

Measure one inch along blade

Step 1 – Measure 1 inch along blade

Measure 1 inch along the blade, from the centre of the gullet.

Saw blade with two teeth per inch

Step 2 – Count teeth

Count the number of teeth in that 1 inch space. This is the blade’s TPI.

The blade on the left has 2 Teeth Per Inch.

A few more examples

blade for sawing, plywood and MDF. It has 12 Teeth Per Inch. This is an example of a blade for sawing plywood and MDF.

It has 12 Teeth Per Inch.

Example of a blade for sawing masonry, 3 teeth per inch And this is an example of a blade for sawing masonry.

It has 3 Teeth Per Inch.

7.5 teeth per inch Please note: A blade’s TPI may not always be a whole number.

 

The blade on the left has 7.5 Teeth Per Inch. Within the 1 inch space, there are 7 and a half teeth visible.

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