text: while the chipper is well made and a work horse trying to get new or spare chipper knives ..is next to impossible called order 2 sets of knives they sent the wrong ones ..e mail them they said they would get back in 48 hrs that was 4 days ago going to email again so I will keep sharping the one it came with till I guess I will make my own or use troybuilt knives mill the holes my self a lot of work ..good luck