I get tired of need a wrench and a hammer (soft) to change collets in my mill. I also don't like the idea of hitting the draw-bar head with a metal wrench. So I made a hammer-wrench or Hanch! I started with a broken ratchet handle, turned a 1/2-13 thread on the end (single point backwards/upside-down) then I drilled a hole in a brand new six point 3/4" deep well socket and tapped it. Then I made head from acetyl/delrin with a square end and pounded it into the drive end of the socket. I made the little white bushing to hide the turned down section of the handle. I tested it out and it works! 
