The only way I have got the brass tube to hold is run a 5/16 tapp in it and use JB weld. It is a try but not very productive. The finish is terrible too. ThanksI seen a video on it awhile ago. My opinion there’s not to much promise in it. Glue wont stick you cannot use brass tubes, as you know finishing isn’t very good. One of those things that might be fun to give it a shot, but I don’t think there’s any longevity in it.