Do I need a cutting fluid?

Lubricating the cutting edge will reduce the heat that is generated by cutting friction – too much heat in the cut is one of the main reasons for blade failure.

A flood of coolant helps wash the chips from the gullets
• Chips become work-hardened in the cutting operation
• If chips are dragged back through the cut a second time, they can damage teeth

A flood of coolant helps cool the blade’s cutting edge and saw guides, extending blade life.

Remember: flood coolant whenever possible and only use coolant where chips are present – do not use coolant on materials that produce a powder, such as gray iron.

What blade speed should we use?

Material Machinability Rating – The lower the machinability rating the slower the band speed will need to be.

Blade Selection – The cutting edge (tooth tip) of the blade will govern the speed at which the blade can run (FlexBack = Slowest Cutting, Carbide = Fastest Cutting)

Cutting Noise / Vibration – Cutting noise or vibration is a killer to a cutting edge – if either is present, the speed must be decreased

Coolant / Cutting Fluid – If the coolant is adequate, use the standard cutting chart speeds. When cutting dry, reduce the speed by 40-50%

I keep stripping teeth in my saw blade. Why?

Check the blade pitch. If the blade engages fewer than six teeth, those teeth are subject to overloading and stripping, especially under heavy feed force. If the blade engages more than 24 teeth, the chips formed may pack the relatively small gullets and strip teeth.

Any chips drawn back into the cut contribute to gullet packing and stripping. Cutting fluid must prevent chip welding, and the chip brush must clean the gullets as the blade exits the cut.

A workpiece that spins or moves in the saw vise will destroy a blade abruptly.

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