>Does anyone know where I can >acquire/purchase dogfish hide >(Mustelus canis) or horsetail >reed (equisetum hyemale)? Xanthe, depending on what you're sanding, you can also make a paste of rottenstone and linseed oil and apply with a rag as a wet sanding agent. Rottenstone (decomposed limestone) is sold at most art supply stores. ::GUNNVOR::