Instead of the cotton string I used the top band of an old sock soaked with acetone polish remover. Lit it on fire and held it over a bucket of water. The fire got so hot it cracked and fell off by itself.
BOTTLE PLANTER While the previous project is a great flower vase, this version is better for budding plants. While the bottle is cut in half the soil can rest up top while the roots grow through the spout.