That only leaves ferrule mites. Nasty buggers, once infested, you have them for life.I have played the owner for about 6 mos now and I have never seen him grind the chalk into it . He never breaks with it either .
Yup. Standard issue chalk ground ferule. Earl who? Strickland? Just checking. If you use the edge of anew or worn piece of chalk and paint it onto the tip you get better results, less dust and no ferule damage.Its caused by using well used pieces of chalk and screwing the chalk into the ferrule. The top edge of the abrasive chalk sands the ferrule until it has a groove in it.
Just had it happen last week .. put new chalk on the table and 2 days later it was shotWhen I leave a new chalk at the table and come back the next day and its bored almost all the way through, it's this guy.