Here is a tip for refreshing your hard charcoal block from @sophie.cunliffe.jeweller - “Refreshing an old charcoal block that has worn and pitted over time. Rub on a cement block and you'll get a nice clean, flat soldering suface again. Oh and filthy hands haha✌” Love this and there is nothing like that fresh surface to work on ❤️ Be sure to wear a mask to protect against charcoal dust 🙌 #charcoalblock #jewelrytools