Put your plastic whatever your going to use in a five gallon bucket and let it cure. Give it 2 days. I use up to 12 pieces of pvc pipe in mine. Also you can use 1 gallon milk jugs and cut a hole up near the top but leave the handle. fill with concrete and then stick about 4 pieces of pvc in it. Also you can go towards the top of the page and do a search on pvc and you should get all kinds of info. CF