The kerf is the groove being cut; if this tool gets pinched in the kerf, deadly kickback can result
I wonder if that Hop 
Ox fence has some close-in that pinched in the kerf and initiated... [DOC] [TLE] model g0605x1/g0606x1/ g0696x/g0697x/ 12" left tilting ... - Manuals [PAR] When machine is not being used, dis- connect power ... accidental contact with 
cutting tool may occur if machine is ... Know how to reduce the risk of kickback, 
and learn .... blade to cut a flat bottomed groove into the face of ... KERF: The 
resulting cut or