{"id":7964,"date":"2026-05-06T13:46:46","date_gmt":"2026-05-06T13:46:46","guid":{"rendered":"https:\/\/www.domusanddesign.it\/?p=7964"},"modified":"2026-05-06T13:48:18","modified_gmt":"2026-05-06T13:48:18","slug":"stains-on-knife-blade","status":"publish","type":"post","link":"https:\/\/www.domusanddesign.it\/en\/stains-on-knife-blade\/","title":{"rendered":"STAINS ON KNIFE BLADE"},"content":{"rendered":"<div class=\"wpb-content-wrapper\">[vc_row][vc_column][vc_column_text css=&#8221;&#8221;]<span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">Dark stains on stainless steel knife blades (common even on high-quality products like those from Domus &amp; Design) are usually caused by oxidation or deposits of limescale and mineral salts contained in water or food residue. Here&#8217;s how to safely remove them without scratching the steel: 1. The natural remedy: Lemon Juice or Vinegar. The acidity of lemon or white vinegar is perfect for dissolving light oxidation stains. How to: Dampen a soft cloth with lemon juice or vinegar and gently rub the blade.<\/span><\/span> <span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">Let it sit for a couple of minutes, rinse, and\u2014essentially\u2014dry immediately with a microfiber cloth.<\/span><\/span><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\"> 2. Baking Soda Paste (for Stubborn Stains) If the stains are darker or stubborn, baking soda acts as an ultra-gentle abrasive. How to: Create a thick paste by mixing baking soda and a little water.<\/span><\/span> <span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">Apply it to the stain and scrub with a soft sponge (never the abrasive part!), following the direction of the steel&#8217;s satin finish.<\/span><\/span> <span class=\"jCAhz\"><span class=\"ryNqvb\">Rinse and dry thoroughly.<\/span><\/span><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\"> 3. Specific Polish for Steel If natural remedies aren&#8217;t enough, there are specific metal cleaning creams (such as Sidol or similar for steel). Caution: Use very little and be sure to wash the knife thoroughly with dish soap after use, as they are not food products.<\/span><\/span><span class=\"jCAhz\"><span class=\"ryNqvb\"> 4. Why do they appear and how do they prevent them?<\/span><\/span><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\"> Knife blades are made of a different steel (often 420 or 440) than forks and spoons (usually 18\/10) to allow for sharpening.<\/span><\/span> <span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">This makes them slightly more sensitive to external agents. Avoid soaking: Never leave dirty or wet knives in the sink. Dishwasher: If you wash them in the dishwasher, remove them as soon as the cycle is finished.<\/span><\/span> <span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">The hot, moist steam &#8220;cooks&#8221; the mineral salts on the blade, creating dark stains. Contact with other metals: Do not wash knives in contact with silver or aluminum objects (galvanic effect that causes stains).<\/span><\/span>[\/vc_column_text][\/vc_column][\/vc_row]\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_column_text css=&#8221;&#8221;]Dark stains on stainless steel knife blades (common even on high-quality products like those from Domus &amp; Design) are usually caused by oxidation or deposits of limescale and mineral salts contained in water or food residue. Here&#8217;s how to safely remove them without scratching the steel: 1. The natural remedy: Lemon Juice or Vinegar.&hellip;<\/p>\n","protected":false},"author":1,"featured_media":6755,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[414],"tags":[],"post_series":[],"class_list":["post-7964","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-info","entry","has-media"],"_links":{"self":[{"href":"https:\/\/www.domusanddesign.it\/en\/wp-json\/wp\/v2\/posts\/7964","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.domusanddesign.it\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.domusanddesign.it\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.domusanddesign.it\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.domusanddesign.it\/en\/wp-json\/wp\/v2\/comments?post=7964"}],"version-history":[{"count":0,"href":"https:\/\/www.domusanddesign.it\/en\/wp-json\/wp\/v2\/posts\/7964\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.domusanddesign.it\/en\/wp-json\/wp\/v2\/media\/6755"}],"wp:attachment":[{"href":"https:\/\/www.domusanddesign.it\/en\/wp-json\/wp\/v2\/media?parent=7964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.domusanddesign.it\/en\/wp-json\/wp\/v2\/categories?post=7964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.domusanddesign.it\/en\/wp-json\/wp\/v2\/tags?post=7964"},{"taxonomy":"post_series","embeddable":true,"href":"https:\/\/www.domusanddesign.it\/en\/wp-json\/wp\/v2\/post_series?post=7964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}