The GUMBY hash method - gravity hash What is gumby hash? The gumby hash is physical seen ice hash or also known as bubble hash. The main difference between the bag and gumby ice hash method, is the trichrome size. With gumby we not need any bag so we are able to catch up all sizes of trichromes. With equipment the most of us have in kitchen, we can start a gumby session today. This tutorial shows you howto get the best and cleanest gumby hash results, with cheapest equipment. I did the followin