Mostly just visual in terms of shine vs matte. For the quality of the joint itself, lead-free has a higher melting point so you need more heat to keep it flowing nicely.
Your joints will do what they’re supposed so, so they’re fine. Chasing perfection is just a fun minigame.
WaterWaiver@quokk.au 1 day ago
There are lots of LF alloys, some shiny some not. Your joints are fine, regardless of the alloy :)