I'm a real thrifty guy, so seeing my soldering tip with months of use on them starting to crack & peel, the layer I take to be nickel cladding, disheartens me. Again, this is planned obsolescence to take advantage of the different heating/cooling rates of nickel & copper so they would catastrophically delaminate. I've toyed with the idea of making my own soldering tips.
My question is what is a good metal/alloy to clad a solid copper core for soldering purposes? It has to be able to wet solder & have a good thermal conductivity. I had an idea of having a beryllium oxide clad, but I would have to sinter it, which is beyond my capability.