Thanks everyone! My log mold holds around 48 oz--I made a batch that was 24 oz, spilt it in two, scented and colored one with cocoa powder, and the other part with wreath green lab color. I put a divider down the middle of the mold and poured the brown and the green on either side--my husband held the divider in place for me.. Then I carefully pulled the divider out. When that was good and set, I did the process again, with another 24 oz of batter, split it, once again coloring green and brown . I placed the divider right on top on the set up soap and poured the green on top of the poured brown and the brown on top of the green---and then said a prayer. I wasn't sure it was going to work. The next day, I unmolded and cut. I took a small round cookie cuter and cut a whole in the middle of the bars. (they were still pretty soft). I placed masking tape over the hole (to keep the new soap from leaking out ) and layed the bars down flat, mixed a small amout of soap batter, and squirted it in the holes. then I walked away and hoped for the best. I think it's sort of cool, but waaaay to much work to make very many of them. Sometimes it's nice to do something different just to do it.