Doubtful. It will be chunky and not likely to incorporate. You are not making a scrubby bar. Just make your batch, put it in the box, insulate well, put it on a heating pad if you don't want to do the cookie sheet in the oven thing and check it in an hour or so. And yes, you cut soon after that hour. If it's a slushy mess, don't cut it. You can't wait for them to cool down too much or you won't be cutting through them. Give it a day to sit and try one. With the recipe I use, I can use my bars the next day without a problem. Just going to add that you need to remember that the salt bars are going to be hot. There are no pictures here and forget about the six to 12 color process, but the rest of the tutorial should help you along. http://www.craftserver.com/forums/showthread.php?62607-Angry-Clown-Salt-Bars-by-Grumpy-Girl