For a nice linear slide modification, I need to be able to attach a smooth rod in a T formation with a threaded rod.This thing will allow you to thread 5/16" rod in one direction, and slip 5/16 rod into the other axis (the diameter is enlarged for sliding vs threading).The thing is in the shape of a cube, and has the same dimensions as this thing: http://www.thingiverse.com/thing:5645If you have need for a smooth 5/16" rod to be mounted perpendicular to a threaded 5/16" rod then...1) Print as many of these as you need 2) Thread the threaded rod into the smaller hold 3) Slip the smooth rod into the enlarged hole (does not go all the way through 4) Rejoice!