Waksupi,
Just expressing personal preferences here, not giving you a bad time for making a liner out of threaded rod. Don't be insulted. No disrespect meant. Almost everyone here makes their own...I don't know...... almost everything !
And, by the way, one of the major purposes of this site is to exchange both new and old ideas, so I don't think you will find much resistance here to ideas or methods. Some, like me, are not all that hard over on being historically correct and use things like Super Glue, a lathe, a TIG welder, and electrical lighting. Others go so far as to make their own taps and dies, barrels, bullet mold cherries, etc. All sorts of ideas and methods are exchanged. Not all of them appeal to all of us. As I said, personal preference.