turn a ceramic mug upside down and lay the knife blade flat against it and pull across the bottom of the mug like using a sharpening stone. Do several times on each flat side of the blade
Pour a cup of baking soda into the drain hole( in bath, shower or sink). Add one cup of vinegar. Wait for 20 mins then pour a jug of boiling water into the drain hole. It works ... View related article.
