Materials -1 1/2” copper pipe -mini tube cutter or hacksaw -4 copper pipe corner pieces -9 copper couplings -canvas rope 1. Cut your pipe into four pieces; I decided on a rectangular shape so cut them at 14×12”. Build your base with the corner pieces. 2. Tie a piece of rope to one side, and tighten the knot as much as you can. I did an over-under pattern from behind. Tighten the rope across the width of the base and knot again.