In a mixing bowl, combine the melted butter and peanut butter. Mix until smooth. Add the sugar, 1 cup at a time, and mix until smooth. Add the Rice Krispies and mix well. Form the mixture into balls about the size of a quarter. In a double boiler, melt the chocolate, chocolate chips and wax, stirring occasionally. Using a toothpick, dip each ball in the chocolate mixture, coating the ball completely. Place on a parchment lined baking sheet and refrigerate until firm. Remove and store in airtight containers.