What if the mixing knife (blade set) is not working properly in a TM5? It is possible to hear the Thermomix motor moving but the mixing knife is not moving.

The blade, called a mixing knife, in a TM5 is engineered with a safety break point outside the bowl, so the pressure required to break the knife will break the shaft before the blade.  This is a safety feature so the blades in a TM5 do not have any pieces that could break free.  If the motor is moving but the blades are not, a new mixing knife is needed, call Customer Service at 888-867-9375 for next steps. 


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