I have made some before and here are some recipes that I have used...
Homemade Laundry Soap Detergent Recipes
Recipe #1
1 quart Water (boiling)
2 cups Bar soap (grated)
2 cups Borax
2 cups Washing Soda
■Add finely grated bar soap to the boiling water and stir until soap is melted. You can keep on low heat until soap is melted.
■Pour the soap water into a large, clean pail and add the Borax and Washing Soda. Stir well until all is dissolved.
■Add 2 gallons of water, stir until well mixed.
■Cover pail and use 1/4 cup for each load of laundry. Stir the soap each time you use it (will gel).
Recipe #2
Hot water
1 cup Washing Soda
1/2 cup Borax
1 Soap bar
■Grate the bar soap and add to a large saucepan with hot water. Stir over medium-low heat until soap dissolves and is melted.
■Fill a 10 gallon pail half full of hot water. Add the melted soap, Borax and Washing soda, stir well until all powder is dissolved. Top the pail up with more hot water.
■Use 1 cup per load, stirring soap before each use (will gel).
Recipe #3
Hot water
1/2 cup Washing Soda
1/2 cup Borax
1/3 bar Soap (grated)
■In a large pot, heat 3 pints of water. Add the grated bar soap and stir until melted. Then add the washing soda and borax. Stir until powder is dissolved, then remove from heat.
■In a 2 gallon clean pail, pour 1 quart of hot water and add the heated soap mixture. Top pail with cold water and stir well.
■Use 1/2 cup per load, stirring soap before each use (will gel).