Cordless Power Tools & Brushless Motor Mastery

Why do premium circular saw blades feature laser-cut expansion slots filled with vibration dampener resin?

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 Correct IncorrectExpansion slots allow the metal blade body to thermally expand without warping or vibrating while cutting through tough timber.

Why do premium circular saw blades feature laser-cut expansion slots filled with vibration dampener resin?

• To let sawdust escape into the motor housing
• To accommodate thermal expansion and prevent blade warping or harmonic wobble
• To make the blade lighter so it floats on water
• To allow cooling air to whistle when spinning