I needed a support for the Proaim DVC 500 camera jib while mounting the pan-tilt head, camera, cable, making adjustments, etc. Usually I used a chair's backrest or a table, but few times there where none, so I designed a U-shaped support that fits snuglly onto a standard lights stand with a 1/4 inch thread. The U-shaped thread was made by a handtap.The U-shape was made in Sketchup and exported .stl. I print it on a K8200 3d printer, and threaded with a 1/4 20 handtap.