An employee and coworkers performed lockout/tagout procedures on a dryer rotary feed to clear a clogged plug. The employees cleared the plug and began to run the dryer, but the plug had not been placed back into the dryer. The injured employee was pointing to the rotary feed to remind the lead person to put the plug back in when the rotary feed amputated his right index finger from the fingertip to the bottom of the nailbed.