Been there! Last month 6 yr old grandson was watching me cut out a pirate quilt for him & I took a minute to educate him on the sharpness of the rotary cutter & told him never to touch it. Well, there was more than one cutter sitting there & while I was using one he had picked up another without me seeing. Next thing I knew, my daughter was beside me asking how come he was bleeding. Good thing I'm a retired RN with a large first aid kit.