I’m starting to replicate weld seams a bit more now. for whatever reason I found the styrene rod/liquid glue/score method not as easy to get the results I wanted. I’ve instead use the styrene rod but work it down with a Dremel Engraver, I use the same motion of ‘coin stacking’ that I was taught years ago when I dabbled in stick welding, in the tighter corners I revert back to the glue. Either way the results are satisfying to me. That works on long runs and straight narrow weld beads, for larger areas I’ll explore the putty method that he described above (think larger puzzle weld seams on some German armor). Welding is messy so I think you cant go wrong with all the various methods, find the one that feels good to you but its worth the effort as older armor certainly had prominent weld seams that need to be accented and ‘toughened up’.