Use the Elmer's Glue All, not the school glue. The water/glue mix is about like milk, I haven't used measurements. I put some glue in a plastic coke bottle and add water until it looks right. I put my freshly-made POP molds in the oven at 350 for an hour or so to remove the moisture...otherwise it may take days for the mold to dry out naturally. One flood usually works, sometimes it takes two. If you flood the mold when it's warm the glue dries quickly...if you're really impatient a hair dryer speeds up the process. You can flood the mold over a pan and pour the excess back in the bottle...it will separate if you don't use it soon but the glue is so cheap it's probably not worth it unless you're going to use it again soon. Another thing I thought of is that if you have mold with a failed coating like paint...just remove the loose pieces if any and the glue will seal right over the paint. I've been thinking about putting a complete tutorial with pictures but don't really know what format to use...I'll check into it. Feel free to ask other questions. Nothing like catching fish on something you've made.