Yorkshire fittings or compression?
My Father in law taught me to clean pipe with a pig skin pad then flux the pipe before putting Yorkshire fixing on, heat until solder is starting to show from the joint.With the pre soldered fittings put the heat more on the pipe to draw out the solder.
I always cleaned the pipe emery and wiped with flux.
I have noticed that soldering copper joints seems to be much harder than it used to be. Seems like much more heat is needed than when I last did any amount which was about twenty years ago.My Father in law taught me to clean pipe with a pig skin pad then flux the pipe before putting Yorkshire fixing on, heat until solder is starting to show from the joint.
I have noticed that soldering copper joints seems to be much harder than it used to be. Seems like much more heat is needed than when I last did any amount which was about twenty years ago.
Presumably the lead content in solder has"reduced??.
The second house I bought had brass central heating pipework!! Apparently brass was used when there was a copper shortage during the 70s. That was a total b*****d to work with!! Servowarm system, no valves on the radiators and the boiler was hidden behind a radiator that swivelled out. That was a design that was never going to leak.....Almost right ! its less copper in the "copper" that causes the problem, copper prices rose dramatically a few years ago so that used to be pipe with a good percentage of real copper now has a lot less real copper in it, same goes for fittings
Any plumber will tell you the newer stuff can be a bugger to bend nicely where its still a joy to work with a bit of old pipe if you get the chance