How do you connect the coil to the evaporator coil in a split system air conditioner?

In a split system air conditioner the evaporator coil, which is right next to the furnace blower is connected to the outside "condenser coil" by two copper lines called a "line-set. The larger of the two carries the refrigerant in its vapor state and the smaller of the two carries freon in a condensed or liquefied state. The brazing of copper line sets is done by means of an extreme high temp oxy/acetylene welding torch and is a much more involved and complicated process than water pipe (copper) brazing. As much as I hate to say it, "don't try this at home!