@Siph you probably only used bad unleaded then, I've never felt that much of a difference (learned it by doing a few thousand unleaded solder joints tho)
@noiob Went to unsolder everything on this board to try again on another one. Before doing that I tried to do a comparison.
Same glob of flux, same iron temp, same technique. Bottom was my unleaded wire. Top is my leaded wire
@Siph you need a significantly higher temp to melt unleaded solder
@noiob yeah, temps that damage the solder mask on the PCB
@noiob Oh I’m using a hot air station and solder paste for soldering and unsoldering chips