{"id":15669,"date":"2023-02-15T09:21:51","date_gmt":"2023-02-15T09:21:51","guid":{"rendered":"https:\/\/cursist-home.maarevenonline.nl\/oxidation-firing-versus-reduction-firing\/"},"modified":"2025-05-08T14:26:06","modified_gmt":"2025-05-08T14:26:06","slug":"oxidation-firing-versus-reduction-firing","status":"publish","type":"post","link":"https:\/\/cursist-home.maarevenonline.nl\/en\/oxidation-firing-versus-reduction-firing\/","title":{"rendered":"Oxidation firing versus reduction firing"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"15669\" class=\"elementor elementor-15669 elementor-10180\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-a6b6a59 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a6b6a59\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5058343\" data-id=\"5058343\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-aaf3efd elementor-widget elementor-widget-heading\" data-id=\"aaf3efd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Oxidation firing versus reduction firing<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca9361e elementor-widget elementor-widget-text-editor\" data-id=\"ca9361e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-style: inherit; color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; letter-spacing: var( --e-global-typography-text-letter-spacing ); background-color: var( --e-global-color-secondary );\">With an electric <\/span><a style=\"font-style: inherit; font-family: var( --e-global-typography-text-font-family ), Sans-serif; letter-spacing: var( --e-global-typography-text-letter-spacing );\" href=\"https:\/\/cursist-home.maarevenonline.nl\/en\/how-does-a-kiln-work\/\">ceramic kiln<\/a><span style=\"font-style: inherit; color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; letter-spacing: var( --e-global-typography-text-letter-spacing ); background-color: var( --e-global-color-secondary );\"> you are completely in control of the firing process. But you can&#8217;t control <\/span><strong style=\"font-style: inherit; color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; letter-spacing: var( --e-global-typography-text-letter-spacing );\">the amount of oxygen in the kiln.<\/strong><span style=\"font-style: inherit; color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; letter-spacing: var( --e-global-typography-text-letter-spacing ); background-color: var( --e-global-color-secondary );\">. And you can do just that with a <strong>gas-powered<\/strong> ceramic kiln by reducing the air supply to the kiln.<strong> This is called a reduction firing.<\/strong><\/span><\/p><p>Because there is not enough oxygen inside the kiln, the oxygen particles contained in the glaze of your work will be pulled out. And<strong> that changes the colour of the glaze<\/strong>. It can also change the colour of the clay.  Most stoneware for example contains iron, which will also be affected by the lack of oxygen.<\/p><p><span style=\"font-style: inherit; color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; letter-spacing: var( --e-global-typography-text-letter-spacing ); background-color: var( --e-global-color-secondary );\">With an electric oven it&#8217;s impossible to create reduction firing. There is enough oxygen present in the kiln, and you can&#8217;t manipulate the airflow. By definition, this results in<\/span> <strong style=\"font-style: inherit; color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; letter-spacing: var( --e-global-typography-text-letter-spacing );\"> oxidation firing<\/strong><span style=\"font-style: inherit; color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; letter-spacing: var( --e-global-typography-text-letter-spacing ); background-color: var( --e-global-color-secondary );\">.<\/span><\/p><p>Although there are potters who try an alternative method: by adding a sealed saggar with burnable materials to an electric kiln, the oxygen in the saggar burns up, which creates a reduction firing. However this is a difficult balancing act, requiring some trial and error to achieve good results.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>No ceramics without a ceramic kiln. Depending on the type of ceramic kiln you have, you can either do an oxidation firing or a reduction firing and thus influence the result.<\/p>\n","protected":false},"author":1,"featured_media":20439,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Differences oxidation and reduction in ceramics | Cursist","_seopress_titles_desc":"Depending on the type of ceramic kiln you have, you can do an oxidation firing or a reduction firing and thus influence the result. But what is the difference between oxidation and reduction? 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