PTFE Tube Bushing

(Maybe this is already tried before but i didnt see it before)

Made a linear slide bushing using 4 pieces of PTFE tube (1.75 bowden tube)
I think this might be quite usefull, might be a little to tight for a smooth motorised system like my prusa i3 but must work great on a handcranked system like for a small x/y table or drill press with a tight tolerance.

(im quite new to the 3D printing world so i love to get feedback :)