Many of the ingredients to make soap can be found locally or at the grocery store, and even more can be ordered online for quick delivery.
But let’s say you aren’t quite sure about this whole soap making adventure and don’t want to invest a lot of money into equipment. One of the biggest (and best) investments you’ll make is your soap mold. Here are some very inexpensive or no-cost soap molds that will get you started.
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Milk Carton Soap Mold
Another easy to make loaf mold can be made out of a standard ½ gallon cardboard milk carton. Be sure to rinse it out well after you’re done with the milk. Cut one side of the mold out and you’re good to go. The plastic coating on the inside of the mold is enough to not require you to line the mold – and the easiest way to get the soap out is just to tear open the carton. To fill the milk carton like a loaf mold, make a basic soap recipe that's about 2 1/2 to 3 pounds in final weight.
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Oatmeal or Pringles Container Soap Molds
Pringles cans are great for single batches of soap and like a PVC pipe mold, make a great round bar of soap. Oatmeal containers are great too, slicing the bar in half to have a semi-circle shape.Continue to 5 of 9 below.
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Shoe (or other random) Box Soap Mold
If you’re looking for a bigger loaf mold than a milk carton, try using a shoe box. Because the cardboard isn’t coated, you’ll need to line the mold, but you can do this with either freezer paper or (my favorite) a lightweight kitchen plastic bag. Just put the bag into the box and make sure that you push down into all of the corners. Wrap the excess plastic out of the box and around to the sides/bottom. Secure the bag with some tape. You will get little wrinkles on your bars of soap from the plastic, but we’re just getting started, right?
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Food Storage Containers as Soap Molds
While they often have rounded/grooved bottoms, these containers are sturdy enough for a batch of soap and don’t need to be lined.Continue to 9 of 9 below.
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If it's firm enough to hold the raw soap batter - and flexible enough to allow you to get the soap out of the mold - give it a try! Glass and metal are inflexible, so don't work well unless your plastic bag liner allows you to "pull" the soap out. And remember that you don't want the soap coming into contact with anything metal other than stainless steel.
There are marvelous silicone loaf pans, muffin shapes, candy molds and more in the baking aisle of your home store. Whatever you use - have fun and welcome to the fabulous world of making your own homemade soap!