In over 50 years of being an archer, I have only seen one bow blow up while being strung. It was a new Bear. It was at a field archery tournament in Reno, Nevada. Probably the most remembered happening at the tournament. Bits of fiberglass floated in the air like ice crystals. The two halves of the upper limb looked like they were joined by angel hair from a Christmas tree. The fellow was using the step-through method to string the bow. Moral, whenever you string/unstring, whether it's daily or annually, use a stringer and use care.