Thanks for the write up. I'd just like to point out, 3D prints are not "coated" with resin. You create a silicone mold, and cast the 3d print, creating an entirely new solid, resin bonded metal object.

There's a number of advantages over metal powder 3D print filaments, such as a greater variety of metals, the strength of cold cast parts is much greater, and you can't use those filaments on SLA printers obviously. Also, the only Iron filament I've seen does not seem to burnish in the same way, though, I'm yet to try it myself.

Cheers.

Paul.