When things are not available then one has to improvise. Brake lines new or used are great for thong holes, and polish up nice. For pin stock I rely on welding and brazing rods. I gently tap off the coating with a hammer, and then clean them up with steel wool prior to use. Chunks of brass can often be found in scrap yards and dumps for use as guards. I also use the band saw cuttings from profiling out knives for guards.