The Mixing Knife will wear out over time if the Thermomix® TM6 is regularly used for chopping hard food. The table below shows recommended intervals for replacing the mixing knife.
You can order a new Mixing Knife on our eShop.
TM5: https://www.thermomix.com/products/tm5-mixing-knife
TM6: https://www.thermomix.com/products/tm6-mixing-knife
If you need further assistance, please contact us at https://service.thermomix.com/hc/en-us/requests/new. Our Customer Happiness agents will get back to you in 1-2 business days.