Long Reach Clamp - 3-16 Bar

I needed a clamp to reach deep inside my RC aircraft frame and this worked.
It is based on a 3/16 square brass tube (K & S #8153) and a 6-32 threaded rod. Both of these come in 12 inch lengths. I cut them in half to make a pair of 6 inch clamps (max jaw opening is about 4 inches). You can make them any length up to 12 inches giving a max jaw opening of 10 inches.
You will also need three 6-32 hex nuts, a 6-32 lock nut and washer that just fits over the threaded rod. Two sets of M-2 x 8mm cap h