Diy Metal Porch Swing Frame . This diy wooden porch swing is a great addition to any home. Making the free standing frame)swing seat series: Refinished Swingset Swing set diy, Swing set, Backyard for kids from www.pinterest.com Build this porch swing and it will only take you around five hours and $40. You can enjoy it for many years to come. Actually, i do have my legs at the very end of the stretcher.