How do I make liquid detergent?

Dissolve 1/3 bar grated Fels Naptha with 6 cups of very hot water. Stir in 1/2 cup Borax laundry booster and 1/2 cup Arm & Hammer washing soda. Stir until it thickens (about 15 minutes). In a large pot, combine the solution with 5 1/2 quarts of very hot water. The mixture should be thick. If your soap separates, just shake it up. Use 1/2 cup per wash load; there will be no suds, but don't worry, your clothes will be super clean and smell nice and fresh. Vinegar makes a good fabric softener. For spray starch, just put a few tablespoons of cornstarch in cold water. Fill a spray bottle, and shake well before using.