If your anal about realism, the welder might be the better option. Then again, as a blacksmith irl, I would never use a welder to repair a sword unless it was really messed up and needed to get new metal onto the blade. even if it was snapped in half, I would probably try a forge weld first… but im not very good at forge welding. EVEN THEN, Im not too confident with the steel a traditional katana is usually made from. Im not THAT experienced, and Id prolly end up screwing the blade and paying to replace it…
[size=4pt]mostly I just do pot racks and hooks…[/size]