The bow is held by 2 sliding clamps on a square aluminum tube. The clamps have living hinges (soft plastic) that flex. They work with ongbows or recurves. The base fixture rotates and has a 30 degree spring-loaded index on the right side. the left side holder for the square tube is spring-loaded so the square tube and the bow can be removed and set into a vertical drying fixture on the outside of the booth. My machinist is making up 5 more sets of clamps for a total of 6 bows at a time. This could be a long one boys. It is heading to Fuller-plast and jam gun insanity. Hi Marty!