WD-40 is too toy for this problem. Agreed that it's wonderful to lubricate and loosen crud, but too thin and dissipates too fast for the lasting results needed for heavy metal hinges and certainly wouldn't work well on scrapping metal to metal.I use WD-40; it displaces water (hence the name) and blasts away rust/crud.
WD-40 acts as a solvent thoughI use WD-40; it displaces water (hence the name) and blasts away rust/crud.