{"id":12942,"date":"2017-09-15T07:32:18","date_gmt":"2017-09-15T04:32:18","guid":{"rendered":"https:\/\/revistadinlemn.ro\/?p=12942"},"modified":"2020-10-28T10:02:53","modified_gmt":"2020-10-28T08:02:53","slug":"how-to-clean-the-old-paint-layer","status":"publish","type":"post","link":"https:\/\/revistadinlemn.ro\/en\/2017\/09\/15\/cum-se-curata-stratul-vechi-de-vopsea\/","title":{"rendered":"How to remove old paint from wood"},"content":{"rendered":"<p>In my desire to tell you the most interesting things I sometimes skip the simple but essential ones. The other day, a lady asked me to help her clean out her grandmother's old dowry box, which she wanted to restore. I've said a few things on the subject, but I've never treated it as a separate topic. But I think that how old paint can be removed is an interesting topic for many of you, and that's why it will be covered at length in this article.<\/p>\n<figure id=\"attachment_12996\" aria-describedby=\"caption-attachment-12996\" style=\"width: 600px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-12996\" src=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/cufar-vechi.jpg\" alt=\"the old layer of paint\" width=\"600\" height=\"450\" srcset=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/cufar-vechi.jpg 600w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/cufar-vechi-300x225.jpg 300w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/cufar-vechi-74x55.jpg 74w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/cufar-vechi-111x83.jpg 111w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/cufar-vechi-215x161.jpg 215w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-12996\" class=\"wp-caption-text\">photo source: coppiceoldpine.co.uk<\/figcaption><\/figure>\n<p>There are 3 main methods for removing old layers of paint or varnish covering furniture:<\/p>\n<ul>\n<li>sanding<\/li>\n<li>sandblasting<\/li>\n<li>dry cleaning<\/li>\n<\/ul>\n<p><strong>Polishing\u00a0<\/strong>is similar to wood, with <a href=\"https:\/\/revistadinlemn.ro\/en\/2016\/08\/02\/sanding-for-diy-enthusiasts\/\" target=\"_blank\" rel=\"noopener noreferrer\">white grinding<\/a>. Use coarse sandpaper, 60 and 80 grit. It can be done manually or by machine. Hand sanding is labor-intensive because the varnish has set well over time and is not very easy to remove. By hand, however, it is easier to get into narrower or hidden spaces, and abrasive materials can be adapted for such places (abrasive sponges, narrow abrasive belts).<\/p>\n<figure id=\"attachment_13006\" aria-describedby=\"caption-attachment-13006\" style=\"width: 655px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-13006\" src=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/slefuire.jpg\" alt=\"the old layer of paint\" width=\"655\" height=\"370\" srcset=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/slefuire.jpg 655w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/slefuire-600x339.jpg 600w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/slefuire-300x168.jpg 300w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/slefuire-470x264.jpg 470w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/slefuire-215x120.jpg 215w\" sizes=\"auto, (max-width: 655px) 100vw, 655px\" \/><figcaption id=\"caption-attachment-13006\" class=\"wp-caption-text\">photo source: aprendeme.com<\/figcaption><\/figure>\n<p>Mechanical sanding greatly reduces the effort as the machine does all the work. You can use small hand-held machines or industrial belt sanders. It's a useful method for large flat surfaces, but harder to use when you have objects with curves, carvings, millings or patterns that prevent the machine from reaching the wood.<\/p>\n<figure id=\"attachment_13005\" aria-describedby=\"caption-attachment-13005\" style=\"width: 494px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-13005\" src=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/slefuire-mecanica.jpg\" alt=\"the old layer of paint\" width=\"494\" height=\"362\" srcset=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/slefuire-mecanica.jpg 494w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/slefuire-mecanica-300x220.jpg 300w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/slefuire-mecanica-74x55.jpg 74w\" sizes=\"auto, (max-width: 494px) 100vw, 494px\" \/><figcaption id=\"caption-attachment-13005\" class=\"wp-caption-text\">photo source: bobvila.com<\/figcaption><\/figure>\n<p>After the paint layer has been removed, the surface is wiped with paint thinner to remove any remaining traces. The wood is then sanded just like the white sanding, using finer sandpaper - 150 or 180 - to remove the raised grain and prepare the wood for the next finish.<\/p>\n<p>Disadvantages of sanding are the high consumption of labor and materials (sandpaper and sanding pads clog quickly and need to be replaced for sanding to be effective) and the inability to reach hidden and very narrow places.<\/p>\n<p><strong>Sandblasting<\/strong>\u00a0was originally used to clean metal of rust and old layers of paint. Over time the method found its way into the woodworking industry and was used not only to clean old finish coats but also to <a href=\"https:\/\/revistadinlemn.ro\/en\/2016\/08\/08\/structuring-wood-by-sandblasting\/\" target=\"_blank\" rel=\"noopener noreferrer\">wood structuring<\/a>. In fact, it is now mainly used for this purpose, with the wood <a href=\"https:\/\/revistadinlemn.ro\/en\/2017\/09\/21\/a-simple-way-to-age-wood\/\" target=\"_blank\" rel=\"noopener noreferrer\">the appearance of someone who has been outside for a long time<\/a> (like old fence boards).<\/p>\n<figure id=\"attachment_13003\" aria-describedby=\"caption-attachment-13003\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-13003\" src=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/lemn-vechi.jpg\" alt=\"the old layer of paint\" width=\"800\" height=\"600\" srcset=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/lemn-vechi.jpg 800w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/lemn-vechi-600x450.jpg 600w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/lemn-vechi-300x225.jpg 300w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/lemn-vechi-768x576.jpg 768w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/lemn-vechi-74x55.jpg 74w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/lemn-vechi-111x83.jpg 111w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/lemn-vechi-215x161.jpg 215w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-13003\" class=\"wp-caption-text\">photo source: revistadinlemn.ro<\/figcaption><\/figure>\n<p>This is also abrasive cleaning, only in this case fine abrasive granules are sprayed onto the surface to be cleaned using a special gun. The cleaning is done very well, after which the wood remains clean and smooth, without the need for further white sanding. Sand is mainly used as a blasting agent, but other materials (walnut shells, small corn, etc.) can also be used.<\/p>\n<figure id=\"attachment_12997\" aria-describedby=\"caption-attachment-12997\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-12997\" src=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-grinzi-rd.jpg\" alt=\"the old layer of paint\" width=\"800\" height=\"450\" srcset=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-grinzi-rd.jpg 800w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-grinzi-rd-600x338.jpg 600w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-grinzi-rd-300x168.jpg 300w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-grinzi-rd-768x432.jpg 768w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-grinzi-rd-470x264.jpg 470w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-grinzi-rd-640x360.jpg 640w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-grinzi-rd-215x120.jpg 215w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-grinzi-rd-414x232.jpg 414w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-12997\" class=\"wp-caption-text\">photo source: designideias.com<\/figcaption><\/figure>\n<p>The disadvantage of this method is that special equipment is needed, and the sandblaster must be properly equipped and trained.<\/p>\n<figure id=\"attachment_13008\" aria-describedby=\"caption-attachment-13008\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-13008\" src=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/echipament-rd-2.jpg\" alt=\"the old layer of paint\" width=\"800\" height=\"618\" srcset=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/echipament-rd-2.jpg 800w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/echipament-rd-2-600x464.jpg 600w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/echipament-rd-2-300x232.jpg 300w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/echipament-rd-2-768x593.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-13008\" class=\"wp-caption-text\">photo source: wisegeek.com<\/figcaption><\/figure>\n<p><strong>Chemical cleaning<\/strong>\u00a0involves a chemical action on the paint layer, not a mechanical one as above. Solvents - more or less aggressive - or even more aggressive substances such as acids (derivatives of hydrochloric acid) or bases (caustic soda) are used to soften the old paint layer and make it removable. For DIY projects, you can find paint strippers in DIY stores that are moderately aggressive so that they can be used without great risk.<\/p>\n<figure id=\"attachment_13010\" aria-describedby=\"caption-attachment-13010\" style=\"width: 638px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-13010\" src=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-sertar-rd.jpg\" alt=\"the old layer of paint\" width=\"638\" height=\"396\" srcset=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-sertar-rd.jpg 638w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-sertar-rd-600x372.jpg 600w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/curatare-sertar-rd-300x186.jpg 300w\" sizes=\"auto, (max-width: 638px) 100vw, 638px\" \/><figcaption id=\"caption-attachment-13010\" class=\"wp-caption-text\">photo source: frugalfluorish.blogspot.com<\/figcaption><\/figure>\n<p>The way of working is simple. The paint stripper is applied with a brush to the painted surface and left to work for a while. If the substance is aggressive, a few minutes is sufficient. If it is a very slow solvent you will need to leave it on for 10-12 hours, maybe even 24. It will soften the layer of paint, which you then clean off with a scraper. You can also use a spackle. When the substance is aggressive, the paint layer also swells, so removal is easier. With thinner, it only softens.<\/p>\n<figure id=\"attachment_16253\" aria-describedby=\"caption-attachment-16253\" style=\"width: 711px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-16253\" src=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2018\/03\/spaclu.jpg\" alt=\"the old layer of paint\" width=\"711\" height=\"437\" srcset=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2018\/03\/spaclu.jpg 711w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2018\/03\/spaclu-600x369.jpg 600w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2018\/03\/spaclu-300x184.jpg 300w\" sizes=\"auto, (max-width: 711px) 100vw, 711px\" \/><figcaption id=\"caption-attachment-16253\" class=\"wp-caption-text\">photo source: silentpaintremover.com<\/figcaption><\/figure>\n<p>If the layer has not been completely removed the first time, the operation can be repeated 2-3 times until total removal. After that the surface is wiped with a cloth soaked in thinner, then sanded as for white sanding. If dark stains remain on the surface and you want to remove them use<a href=\"https:\/\/revistadinlemn.ro\/en\/2017\/04\/19\/bleaching-and-discoloration-of-wood-after-removal-of-the-old-finish\/\" target=\"_blank\" rel=\"noopener noreferrer\"> wood bleaching and discoloration methods<\/a>.<\/p>\n<p>CAUTION: If you have used special paint strippers, you may need to neutralize afterwards. The substance used should have instructions for use and tell you what to neutralize the substrate with so as not to affect the future finish coat.<\/p>\n<p>In addition to these methods the paint can also be removed with a wire brush, by heating with a heat source (hair dryer) and removing the soaked layer with a squeegee or by direct burning with a burner. They are less commonly used, however, with the 3 above being the most common.<\/p>\n<figure id=\"attachment_13001\" aria-describedby=\"caption-attachment-13001\" style=\"width: 480px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-13001\" src=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/incalzire.jpg\" alt=\"the old layer of paint\" width=\"480\" height=\"360\" srcset=\"https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/incalzire.jpg 480w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/incalzire-300x225.jpg 300w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/incalzire-74x55.jpg 74w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/incalzire-111x83.jpg 111w, https:\/\/revistadinlemn.ro\/wp-content\/uploads\/2017\/09\/incalzire-215x161.jpg 215w\" sizes=\"auto, (max-width: 480px) 100vw, 480px\" \/><figcaption id=\"caption-attachment-13001\" class=\"wp-caption-text\">youtube.com<\/figcaption><\/figure>\n<p>If you have correctly and totally removed the old coat of paint then the wood is ready for a new experience. It is like a clean new canvas waiting for its painter. Good luck!<\/p>","protected":false},"excerpt":{"rendered":"<p>Din dorin\u021ba de a v\u0103 spune lucruri c\u00e2t mai interesante sar uneori peste cele simple, dar esen\u021biale. Zilele trecute o doamn\u0103 m\u0103 ruga s\u0103 o ajut s\u0103 cure\u021be vechea lad\u0103 de zestre a bunicii pe care dorea s\u0103 o refac\u0103. C\u00e2te ceva am mai spus eu pe aceast\u0103 tem\u0103, dar niciodat\u0103 nu am tratat-o ca [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":12995,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"De multe ori, pentru a schimba aspectul unei mobile vechi, este nevoie s\u0103 \u00eendep\u0103rt\u0103m total stratul vechi de vopsea. G\u0103si\u021bi c\u00e2teva metode \u00een articol.","_seopress_robots_index":"","footnotes":""},"categories":[2185],"tags":[1917,1915,1916,1919,1918],"class_list":["post-12942","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-finisare-diy","tag-indepartarea-stratului-vechi-de-lac","tag-indepartarea-straturilor-vechi-de-vopsea","tag-metode-de-curatare-a-lemnului","tag-sablarea-lemnului","tag-slefuirea-lemnului"],"_links":{"self":[{"href":"https:\/\/revistadinlemn.ro\/en\/wp-json\/wp\/v2\/posts\/12942","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/revistadinlemn.ro\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/revistadinlemn.ro\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/revistadinlemn.ro\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/revistadinlemn.ro\/en\/wp-json\/wp\/v2\/comments?post=12942"}],"version-history":[{"count":18,"href":"https:\/\/revistadinlemn.ro\/en\/wp-json\/wp\/v2\/posts\/12942\/revisions"}],"predecessor-version":[{"id":28139,"href":"https:\/\/revistadinlemn.ro\/en\/wp-json\/wp\/v2\/posts\/12942\/revisions\/28139"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/revistadinlemn.ro\/en\/wp-json\/wp\/v2\/media\/12995"}],"wp:attachment":[{"href":"https:\/\/revistadinlemn.ro\/en\/wp-json\/wp\/v2\/media?parent=12942"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/revistadinlemn.ro\/en\/wp-json\/wp\/v2\/categories?post=12942"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/revistadinlemn.ro\/en\/wp-json\/wp\/v2\/tags?post=12942"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}