Last month, I described how you can make a cheap flash clamp for holding a remote flash, using cheap clamps and a 1/4" bolt, available from your local hardware for a few dollars (as per the photo on the right).

However, with the full weight of a flash attached to the end of the clamp handle, particularly if the flash is mounted on top of a wireless trigger, the clamp and flash isn't particularly stable.

To improve the stability of the flash clamp, another 1/4" bolt can be added to the clamp, much closer to the jaws of the clamp.

Mounting a flash on this bolt closer to the clamp jaws provides a more stable solution, as the majority of the weight is now attached to the clamp much closer to the jaws.

If using wireless triggers to trigger the flash, the flash can be attached to the trigger's hot-shoe, and the trigger then attached to this new bolt on the clamp.

Alternatively, the wireless trigger could be attached to the bolt on the end of the clamp handle, and a PC sync cable can then be used to connect the trigger to the flash, as shown in the photo below.

improved version of the cheap flash clamp for holding a remote flash,
with a Canon 580EX II being triggered by a Phottix Tetra wireless flash trigger