I was looking at this 2 color soap on etsy. https://www.etsy.com/listing/262191664/oriental-pagoda-temple-with-plum-tree I understand they probably used melt and pour soap with a mold. I know how to make molds from a 3d printer. Right now I'm wondering what are some options on technique on how to make manufacture 2 color soap of my own design in as little time as possible? My initial though on how they made this soap is to drop in the white color soap first and just wait a while till it dries, then spray rubbling alcohol, then pour the blue color soap. Look at the example on etsy, it looks like so much care needs to be used to make sure the white soap does not overflow. I'm not keen on exercising that much care on making soap, I rather explore options on how to make something similar while spending as little time (and care) on it as possible. The more care I need to take, the more labor time increases, and the more costs increases. The most amazing part about this soap for me, is how delicate looking the white part of the soap is. Thanks in advance for any thoughts!