 This has allowed both TIG and MIG welding to displace lugged steel construction, in large part because these methods lend themselves more easily to automation and reduce the cost by eliminating the lugs.Conversely, lugged steel construction remains popular among builders of custom-fit bicycle frames, and among amateur framebuilders, since it is one of the simplest methods of constructing a bicycle frame by hand in a small workshop.Despite the fact that lugged steel frames are no longer mass-produced, frames are still available.