• 1
    Step 1

    1/2" nylon ball-bearing that I drilled and tapped a 6-32 thread into 3/8" deep.

    These ball-bearings came from a wonderful place. Here is the link to the site.

    http://myworld.ebay.ca/toolsupply/

    This nylon plug made an excellent holder and allowed the drill hole to be centred.

  • 2
    Step 2

    With a round chainsaw file I cut a grove into the nylon ball. Then using J-B weld and the 6-32 screw I attached the ball-bearing to the Fibreglass shafts. The spring mounts were attached by 4- 4-40 set screws 1/2" in length. The set screws touch, this locked them in place.

  • 3
    Step 3

    The end effector socket mounted.

    The elbow joint mounted.