i have done it myself, i heal quickly, but i did do it with my commercial consew, man do they have a lot of foot pressure, the needle did not break, but i just about did, thought i was going to die, it took a sometime for it to heal, not long, but with a commercial machine the pressure was so great that i lost feeling in the tip of my finger for months, never lost the nail tho, get well and take care
jan in florida