Stacked candles can be made with the help of cookie cutters. 1 Pour melted wax (check out procedure in the blog) in a deep tray or vessel. 2 Cut out various shapes when the wax is semi-hard, make a hole in the centre with a nail . 3 Leave the wax to harden , the shapes will come out easily. 4 Thread the wick through each shape , the wick can be knotted at one end . 5 Leave 1/2" wick at the top. One can use bottle caps as cutters to make round shapes or use a knife to cut out shapes .