How do you make castor oil?
Castor oil is gotten from processing the castor seeds. It is usually extracted by cold-pressing the seed, squeezing out the oil and then refining it to remove all its toxins.


First you will need to get hold of the castor seeds, remove the shell either by hand or with the aid of machines used for deshelling seeds.

After the shells have been removed, the next step is to dry it. You can dry it by leaving it out in the sun for some time and you can also dry it in an oven at about 60°C for 7hrs. The drying is necessary as it helps to reduce its moisture content.

After drying, it is necessary to roast the seeds, as that will make it easier to grind into a paste.

For the grinding process, commercial dealers usually use a cold press machine, but for the Do-It-Yourself (DIY) process, a clean mortar and pestle will perform the same function only that it’ll require more energy.

The next step after grinding is to pour the fine paste into a pot with some water, then apply high pressure (boil).

While boiling you can go ahead with your daily tasks as it takes up to 4-5 hours for the oil to float to the surface of the water.

For the next step, experts say it is best to leave it to cool overnight so that the condiment can settle and the oil is ready to be scooped.

By the next day your castor oil is ready to be packaged and stored in a bottle.


More explanation available here
http://fashverion.xyz/make-castor-oil/

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