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Topic: Let's Make Soap - A Cold Process Soapmaking Tutorial  (Read 3534 times)
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DaBunny
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Stay clean. Make soap.


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« on: July 01, 2010 03:15:30 PM »



I get a lot of curious people downtown who want to know how to make old fashioned, cold process soap. So for anyone who is interested in what making soap is all about, here's an overview of the soapmaking process. It is not meant to be used as a tutorial. Because of the many dangers associated with soapmaking due to the use of lye and the plethora of information to be had, I recommend that you carefully research the process before starting out on your own. Details on where to obtain additional information will be included within this article.

Soapmaking involves a chemical process in which sodium hydroxide (lye) reacts with oils to make soap. This process is called saponification. Because this process requires the use of lye, important safety precautions must be taken. Rubber gloves and safety glasses should be worn during the soapmaking process, and vinegar, which neutralizes the lye, should be kept on hand in case of an accidental spill or burn. In addition to the necessary safety equipment needed for the journey into making soap, there is other required equipment you'll need to get started. First and foremost you will need to acquire lye. Because without lye, there is no soap. You should be able to find lye in the plumbing section of your hardware store. I buy Roebic brand at Lowe's. The brand doesn't really matter, but it must say that it is 100% sodium hydroxide. You'll also need a large pot for mixing the soap. This can be any type of pot you like - I use my hubby's old beer making pot - as long as the pot is not aluminum. Lye reacts badly with aluminum so remember to never mix the two. You'll also need an accurate scale, I use a digital postal scale I purchased at Staples. And, you'll need a thermometer or two to measure the temps of your oils and lye solution as well. Additionally, you'll find that a stick blender is your best friend in making soap, and then of course there are the molds, soapmaking oils, and distilled water to be mixed with the lye.

There are several types of molds you can use to create cold process soap. You can purchase tray molds that are basically hard plastic molds that will create numerous bars of soap at once. These molds should be marked suitable for cold process soapmaking since the soap gets very hot during the saponification process. You can also easily build a mold from wood, with a bottom and four sides. This type of mold will produce a log of soap that you would then cut into slices. When using a wooden mold, you must line it with parchment paper to aid in easy removal of the soap. (Freezer paper is not a good idea as it melts to the soap and mold.) Lining your mold is sort of like wrapping a present except that you are wrapping the inside of the box rather than the outside. It takes some practice to get it right. The parchment should then be secured with tape to the mold.
Next, we're on to oils. The soapmaking oils are an important part of your soap. The types of oils you use will determine the properties that your soap will have. For example, three of the most popular soapmaking oils, especially for beginners, are olive oil, coconut oil, and palm oil. The olive oil helps create a moisturizing bar with a stable lather; coconut oil produces a hard, cleansing bar with a fluffy lather; and palm oil makes for a hard bar with a stable lather. Each of these oils has its own SAP value which determines how much lye should be used in the soap recipe for saponification to occur in such a way that it makes soap. Too much lye and you have an unusable bar of soap. Not enough and you could end up with a really soft soap with excess oil. A great source for learning more about the saponification process and the properties of various soapmaking fats & oils is Susan Miller Cavitch's book The Soapmaker's Companion. Her book also contains a great troubleshooting section and several of her own recipes. When creating your own recipes for soap, there are also a lot of additional free resources to help you with this process. Lye calculators, for example, will automatically calculate the amount of lye you need in a recipe based on the amounts and types of oils you plan to incorporate into your recipe. You can find multiple links to lye calculators by conducting a google search. Although I like to use the lye calculator at Majestic Mountain Sage. It is good practice to always double check the amount of lye in a recipe with a lye calculator if you are unsure of its source.

Let's get down to business!

So, I guess by now you're wondering just what you do with all of that lye and oil and equipment. Well, I'll tell you. You make soap! Your best bet is to start by preparing your mold so that it is ready when your soap is ready. You'll also need to cut out cardboard that will fit over the top of your mold. The cardboard will be used to help insulate your soap after it is made. Once these steps are complete, you would then measure out your distilled water as called for in the recipe you are using. Measure the water out in fluid ounces. Pour it into a non aluminum container. Next, measure out your lye. Be sure you have on all of your safety gear for this. Lye gets VERY hot, and chemical burns are never any fun. For the lye, you will be weighing the amount needed with your scale. Place the container you're using to measure the lye onto the scale, press tare to zero it out, then slowly pour the lye onto the scale until you reach the amount needed. Then, with a mixing spoon in hand, slowly pour your lye into the water, never the other way around as it could result in a not so pleasant volcano effect. Stir your lye into the water until it dissolves. Now set it aside to cool. If you're mixing the lye inside, keep it on the stove with the exhaust fan turned on. Or allow it to cool outside to avoid the nasty fumes. Be sure there are no children or animals underfoot who could get hurt.

Next we're on to the oils! While the lye is cooling, you can weigh and melt your oils. I normally melt my oils all together in a large pot on the stove at medium heat. You can also melt the oils separately in canning jars within a water bath. First, however, you must weigh your oils on the scale. Weigh each oil individually. Set your container on the scale, hit tare so it zeros the weight, then slowly add the oils to the container until you've reached the weight the recipe calls for. Repeat this process for all oils and fats in your recipe. I usually start with the solids first so I am adding the liquids to the pot last. Stir the oils until they are completely melted, then remove from heat.

Once your lye has cooled to at least 120 degrees F, though I find I like to use my lye-water solution between 95 and 100 degrees F, you can generally beginning pouring the lye-water into your oils. The temperature of the oils can vary depending on what the recipe you are using calls for, but the oils should not be hotter than the lye. (Refer to The Soapmaker's Companion for information on why temperatures matter.) With your handy stick blender ready to go, very slowly pour the lye-water into the oils. Begin stirring with the stick blender on low. As the lye and oil begins to incorporate, you can switch the blender to high. Stir well, moving the blender all over the bottom of the pot. You will continue to stir until you reach what is known as trace. When the soap has reached trace, it will sort of look like cream of wheat or a custard. When you pull the blender through the soap, it should leave a line following it, and if you pull some of the soap up then drop it on the surface of the soap, the soap should be able to support that drop. Should you not reach trace, within 15 minutes, you can rest for about 15 minutes, then start mixing again. Some oils used in soapmaking are slower to trace. Olive oil, for example, can take a much longer time to trace than other oils unless it is mixed with other oils whose properties promote a quick trace.

You would stir in any additives you'd like to use in your soap, such as fragrance or colladial oatmeal, once your soap has reached a light trace where it is just barely leaving a trail or supporting a drop. Mix these in well, especially any essential or fragrance oils, so you won't have any "hot spots" in your soap. Generally fragrance oils account for 3% of your soap, but be sure to follow manufacturer's recommendations if they are available. After your additives have been thoroughly incorporated, you're ready to pour your soap into its mold!

Slowly pour your soap into the prepared mold. Drop the mold with the soap onto the counter several times to help remove any air bubbles. Next, cover the mold with cardboard and tape it down onto the mold. Follow this step by placing several towels or a blanket over your covered mold. This helps to insulate your soap so that the saponification process can properly occur. Your soap should then remained covered for 24 hours.

Once your soap has been in the mold for 24 hours, you can then remove the soap from the mold. I generally use a lower amount of water, so that my soap can immediately be cut into bars. If once you unmold your soap, however, and find that it is really soft, then you can wait another day or two before unmolding and/or cutting your soap into bars. Once the soap has been removed from the mold, you will then need to allow your soap to cure in order to completely finish the saponification process. This generally takes a period of 2- 3 weeks. If you're setting your soap to dry on a flat surface, be sure to set it on top of parchment or freezer paper to keep the oils from seeping out of the soap into the surface of your drying space. You can also dry your soaps on a rack. Once the soap has cured you can then package it to share with your friends and family!
Still have questions?

Not everyone has a successful soapmaking experience the first go around. So if you're still cautious after all of your research, then I recommend finding a friend who makes soap to teach you the process.
Ready, set, go!

Looking for an easy recipe to get you started? Well, here ya go.

Basic Cold Process Soap Recipe

19oz. coconut oil
19oz olive oil
10oz palm oil

16fl oz. distilled water
7oz lye

At trace:
2oz. fragrance oil of choice

Follow your basic soapmaking instructions for a great bar of soap with a creamy thick lather!

Remember, if you are ever substituting an oil for another oil in a recipe, you must recalculate the recipe to get the correct amount of lye needed since different oils & fats have different SAP values. Never make a substitution without completing this crucial step.

You can find a list of helpful links to soapmaking resources and references here.

This article is (c) Rebecca's Soap Delicatessen.
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Rebecca's Soap Delicatessen - Buy soap.
Soap Deli News - My soap blog.
smittenheart
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Let go of what's already gone..


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« Reply #1 on: July 03, 2010 07:59:02 PM »

awesome tute!!
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its ME!!
http://www.craftster.org/forum/index.php?topic=327537.0
 
http://cowandpigdesigns.etsy.com
http://cowandpigdesigns.blogspot.com
Soap licking is dangerous..please dont try it at home

will trade some soap for a superhero cape which will be used by the kid in my avatar ^^
DaBunny
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Stay clean. Make soap.


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« Reply #2 on: July 12, 2010 01:50:08 PM »

Thanks. I would always get confused by other tutorials I found on the web so I tried to make mine as clear as possible.
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Rebecca's Soap Delicatessen - Buy soap.
Soap Deli News - My soap blog.
v3nu5
"Imagination is more important than knowledge." -Albert Einstein
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« Reply #3 on: July 26, 2010 02:11:32 AM »

Thank you thank you thank you! I have several older soap making books, but they really weren't as helpful as your information. This has restored my faith in attempting my soap making adventure. You're so awesome. <3
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DaBunny
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Joined: 09-Aug-2005

Stay clean. Make soap.


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« Reply #4 on: August 13, 2010 11:26:41 AM »

You're welcome. I'm glad my explanation was helpful to you.
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Rebecca's Soap Delicatessen - Buy soap.
Soap Deli News - My soap blog.
krysiadumala
« Reply #5 on: March 18, 2011 12:19:03 PM »

i stared with this recipet, its honestly the best one out there. glad you shared it with every one
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