In this tutorial, we learn how to soften polymer clay. If you have crumbly clay and you want it to be soft, then you can make it softer easily. Now, take the clay and break it up into small pieces. Then mush this together with some translucent clay that is softer. Work this together with a jar or put it through a pasta machine. When you do this, it should be pretty soft and the air pockets should be removed. Continue to work the clay until it is all one color and it is really soft, then you can use it for whatever you would like.