Help to find a flexible material to make a form for cement projec
I am making a coffee table top on top of plywood which is kidney shaped. My intention is to put concrete on the top and place small glass items into the concrete, however I need to find something very inexpensive that will make my form around the plywood which I can pour the concrete into and wont drip out and all over the floor. Any idea? I have had no luck so far.