Double "T" nut

[ncollar]

Marv
Love the idea and the secret with anything is it does not require torquing. I worked in the finish end of a print shop and the paper folding machines, I trained a young man and within two months you could not used a ball driver on 90% of the set screws that required to be adjusted as needed. Many just do not understand torque and how much to apply.
Nelson