After the holes are drilled, I use a hammer to tap the rods into the rack.
I have had difficulty finding a tie rack that I like. I decided to take it upon myself to make one to my specs at TechShop. It is a very simple design and doesn't take much time. Sara at TechShop Detroit was very helpful. The whole rack was made out of parts from tech shop. The steel rod cost only $5 and the wood was scrounged from the scrap bin. www.techshop.ws
The first step is to gather materials. I am using one 72" long, 1/4" diameter steel rod and a plank of wood from the scrap pile. Total cost: $5