1．Blade has twisted or jammed in the cut because the material was not held firmly.

2．Machine has been twisted or turned while is in the cut.

3．Blade core has undercut due to cutting below the asphalt into the sub-base.

4．Blade is too hard for the material cut, resulting in the blade hammering in the cut.

5．Blade is deflected in the cut due to the blade flanges being worn or deformed and failing to provide proper support.

6．Inadequate water supply.