I want to mount metal bars onto wood, or other structures, without having to drill holes in the metal bars, or rather, I want to mount them with a bit of an offset.This thing is a slight modification of the original. I added a taper to the mounting holes so that when I use screws with a taper, they won't split the plastic.1) Print a few, either of the slip-through kind, or end caps. 2) Screw them to something solid 3) Slip metal bar in as rail 4) Mount things on the metal bar, like plastic bins