Small shelf, quick print, expandable.

A small shelf based on pipes, use the pipes (printed ones) to be the shelf bottom, I enclosed hollow ones which print faster for a lightweight version and the full filled ones for heavier items.  I used 20 percent infill and normal PLA , 200 hot end, 60 bed, 50 speed, 4 layers top and bottom.   Makes for a nice knick knack shelf for kids room or living room, just use colors you prefer.  Designed holes in bracket to physically put to a surface or you can use the adhesive backing.  Need to use glue on pipes after print to lock in place pipes, (gorilla glue or super glue works , what I used).  I used .70 inches for the pipe size, other pipes that size should work if you just print the brackets, just adjust and make more brakets to support it.