Depends on what magnetic material its made of and how hot it gets during grinding.
Soft iron magnets loose magnetic strength rather easily.
Neodymium magnets loose magnetic strength at elevated temperature, samarium cobalt and most lower grade ceramic magnets will tolerate elevated temperatures much better.
Soft iron magnets loose magnetic strength rather easily.
Neodymium magnets loose magnetic strength at elevated temperature, samarium cobalt and most lower grade ceramic magnets will tolerate elevated temperatures much better.
