Bar clamp for z polished bar

[Pablo M. Mana]

Hello, in a while will be sending a piece to github. My idea is that you could replace 4-clamp.scad bar for a couple of pieces that I propose.
In my opinion this part should provide additional strength to ride it used almost the same amount of nuts and washers for two bar-clamp.scad.
If someone wants to print it before setting it carefully and dist_until_nut dist_between_bars variables.

Bye 

Pablo M. Mana