Marzipan Knife. The perfect tool to work with cake lace mats. Spread and cover with ease using this Marzipan Knife. Perfect for both small and large projects, this knife is perfectly smooth and safe for use as it is not sharp. Use the smaller edge at the end of the knife for spreading cake lace on detailed mats. With a comfortable handle and a tapered blade, this food-safe knife is the perfect tool for your lace projects.