stuff going to come in the can as seen, will have a mettle cap, just poke a hole in the mettle cap and poor some in the lid, I use a soldering brush but a small paint brush, not house painting brush but a one you would use for art. make sure is horse hair or natural or it will melt it. do not worry about putting to much on, get the brush first third good and soaked and dap down the break on the tank and press. hold for 3 to 5 min.