1 Have you been looking for a good way to make cut or weld marks on your home metal fabrication projects? Get some soapstone and start making marks like the pros! What is Soapstone? DIY Metal FabricationFebruary 26, 2015 in FABRICATION KNOWLEDGE / TOOLS OF THE TRADE! tagged DIY Fabrication Tools / Metal Fabrication / Metal Marker / Mig Welding / Sharpie Alternative / Soapstone / Tig Welding / Welding by Paul