you can easily make a hude glue glue pot but buying a big pot and a little pot at a thrift store, you boil water in the big pot and mix the hide glue in the little one set inot the big one. this is if you want to control the density and viscossity of the glue.   add more crystals to make it thicker and add more water to make it thinner. it doesn't set too quickly and can always be removed to try again.