I have a 20 year old manual mortising machine. You know, the one operated by Armstrong with the side lever! Working with some QSWO and making a 1/4 inch mortise. Cleared a pilot hole and then chopped about an inch wide and about an inch and a half deep. Then had the chisel blow out the side of the workpiece! Shut everything down and removed the chisel from the machine and found it had bent. Anyone ever had that happen to them?
Replacement chisels with a 5/8 shank are hard to find. Most machines and suppliers tend to be using a 3/4 shank. Guess I need to see if I can alter the housing.