Mine silver in the crafting guild, tele back to faldor, smelt, craft tiaras, run back to guild. This way is the best training method in f2p in my opnion. Not only will you get crafting exp, but you'll train 3 other skills as well. Work extremly well if your past lvl 50 crafting as the larger amounts of silver you mine and smelt will add greatly to your other skills. No other training path works this many skills in f2p this well.