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i have a 6" hand auger (mora) and it worked great until my last outing, i was just starting a new hole when the auger was sort of dancing on the ice it wouldnt go straight down like normal.
Ice build up on the blades will make it skip. check that 1st when it happens. we hold ours over heater when this happens. shake water off after every hole and dont place wet blades in snow. if no snow .sharpen blades. remember, bottom surface remains flat sharpen only the top bevel.
idk what kind they have its a strait up mora 6" that i just bought in december so i hope i dont already have to change the blades