If chips are building up and not breaking during tapping, what should be done?
Back off the tap to break and clear chips
During tapping, long chips can pack into the flutes and the tapped hole, jamming the tap and risking breakage.
The standard practice is to back off, that is reverse the tap part of a turn, so the cutting edges snap the chips and clear them from the flutes.
Applying more torque or increasing speed would worsen packing and can break the tap, and reducing cutting fluid removes lubrication that helps chip flow.
Hence, the answer is Back off the tap to break and clear chips.
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