Nah I've done tons of soldering.I just like the way it works with the brush on stuff.especialy when doing big battery lugs.try it next time you solder, I'm sure you'll like it after trying it.The flux needs to be on the copper first to get a good bite and it doesn't always work that way with the flux core.thats why you don't use it with plumbing, you'll never get a leak proof connection.