years ago, i did a complete reading of this discussion index - starting at the back and coming forward. made notes of items/subjects of interest/relevance to me in a spiral binder....that goes about 30 pages.
somewhere buried in that compilation is a note from someone whose name i do not recall - about recutting flat top checkering using short sections of hacksaw blades, adapted to use in conventional handles. in the past i have set-up several pilkington view-thru handles with sections, about 3/4" in length, and have decently recut several old guns. they can be set to cut either push, or pull, and can be easily obtained in various teeth-per-inch.
now-a-days i'm too shaky to be comfortable trying to do such things any longer - and i was never brave enough to attempt cutting new checkering either...