Ametaus, when you cut, use a very sharp chef knife. Do not use a serated knife as they take on a personality of there own when it comes to cutting soap. Hold your knife steady and flat with you dominant hand and place the other on top of the blade and push down. Keep the knife steady. I usually take a ruler and mark the bar with a pencil every 1 inch on both edges of the log. Makes it easier to cut uniform sized bars.