Diy Curtain Finial Ideas . They are made of leftover curtain rods or inexpensive electrical. Next let me show you how i made diy finials to go with my diy curtain rods. Debdoozle DIY Curtain Rod Finial from debdoozle.blogspot.com Goodhome ikaria matt white metal cap curtain pole finial (dia)24mm. Today i am going to show you how i made my own curtain rod finials using glass doorknobs for the store bought curtain rods i used to hang the drapes. This project requires a welder so if you have one, great.