NetFlix - Customer service is a statement and a hang up no. Customer service is a statement and a hang up no service or contact with this company if it continues this way bye-bye netflix.
Step 7: Braze the Aluminum. Rub the brazing rod along the channel until it's filled in and finish it off with some more heat. If you don't get the aluminum hot enough the ... Using a propane torch and some aluminum brazing rods is a quick way to bonding aluminum without using a welder.
Maybe add the steel once the aluminum has melted using an oxyacetylene torch (hot metal cutting torch, will probably boil metal. @jj.inc: Maybe you could use a piece of small diameter re-bar as the center of your mold piece. Maybe make it out of wax around a rebar core, and pour the AL down in the mold.