Is there anyone that is making quad ferrules for sale.  (Doug Hall)

Tony Young will make 4 slit ferrule. Someone, on the list, once suggested using a 4 sided screw extractor to give the round ferrule a square shape. I wish I could credit the originator of the thought.  (Rich Jezioro)

At Grayrock, J. D. Wagner showed a set of broaches that he uses for quad ferrules.  You might want to check with him.  (Scott Grady)

Another way to do this is take the four slit tabs, crown and thin as usual, build up the ferrule station with small lengths of discarded strips and glue them down, turn the station round up to the tabs, then glue.  Once the ferrule is mounted use small pliers that don't have any serrations to further flatten the tabs.  (Kyle Druey)

Tony Larson has them.  (Dave Norling)

I know that Tony sells round ferrules with 4 tabs for quads but I don't think he offers broached or squared ferrules for quads.   (Bob Williams)

If you want quad ferrules you need to buy them unserrated from Golden Witch. I bought 6 sets from Tony Larson and had them swagged for Quads, only one set turned out staying straight. I found out from Hal Bacon the problem was the ferrules were serrated, and the ferrules that Golden Witch sells for Quads are not serrated. So then you need to find someone to swag them, or buy the tooling from J.D. Wagner and do them yourself.  (Dave Henney)

Tony Larson is the one I get mine from, but they are four serrations, not square. The best look is to use Jeff Wagner's tools on step down non-serrated ferrule. Great look.  (Bob Maulucci)