My mother used to make these
, but she used old aluminum lawn chairs that she was given or bought (yard sales, etc.) She would take the screws and old worn plastic straps off, clean any areas (SOS worked well), and paint if needed. They came out nice.
The patterns/directions on kingskountry site is a good start, but their chairs are a bit expensive. Are they better than the plastic strapped ones you can buy now?
I have a few older books on this, but I'm not sure if they still make them. I found many pattern books at thrift stores (along with macrame cord!)