Yes, before I got my retipping jig made I sent 2 blades to Menominee for re-tipping, hammering and to copy and make 2 more. They did an excellent job, and turn around was good.
However, after I finished the jig I've done my own. Likely next time I'll send them in for tipping and hammering again. I still have 4 blades, 2 for hardwood, 2 for softwood and don't need more. I don't have a solid concave surface to even attempt to hammer my own. Likely it would take a lot of know how, not just the right support surface anyways.