I used to chuck a length of brazing rod in the lathe and turn flat faced beads with a little tail to fit into the tube on front sights. You can make the bead any size you desire this way and one particular customer liked a big 1/8” bead so I made a bunch for him and his rifles. I’d put a dab of epoxy on the sten prior to inserting it in the tube and forgo the crimp.
They worked fine but were labor intensive for no more than a replacement sight cost.
