Step 2
Take one of the 10-inch pieces of PVC and attach a 90-degree PVC angle to it with PVC cement. Make sure the pipe goes in as far as it can. Now, attach another pipe to the other side of the 90-degree angle. Add a 90-degree PVC angle to the end of the second pipe, making sure the two 90-degree angles are facing each other and the pipes can lay flat. Now add a third pipe to the open end of the 90-degree angle. You should almost have a square at this point when laying the pipes flat.