Tang hose in handle. Remove handle and clean tang with steel wool Make sure hole in handle is dry. Coat tang and hole with epoxy glue and reset tang in handle. Allow glue to dry 48 hours.
Handle split If it is wood, dry thoroughly and force epoxy glue in the split. If plastic, use plastic-mending adhesive. Clamp the handle in either case until glue dries.
Wood handle roughened, bleached by hot water. Smooth with fine sandpaper and steel wool. Then saturate wood with linseed oil and rub it in well.
Metal rusted. This happens only to very old cutlery, not to stainless steel. Rub liquid rust-remover on the metal. Then go over it with fine steel wool or emery cloth.
Knife dull. Use a flat carborundum stone (the bigger, the better). Hold blade almost flat on this and sharpen with a circular motion.