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[Resolved] What Grit Sandpaper Should I Use Before Painting Wood?

You can get great results faster by choosing the best paper for your job 🤓 By using thousands upon thousands of small, abrasive particles, sandpaper can be used to scratch away imperfections. Grit refers to the size of the particles or the grit. The iron rule of sanding is to start with coarse grits that can quickly eliminate surface imperfections, and then gradually increase the fineness. The’s scratches leaving behind by the earlier grits are erased with each successive grit until they disappear completely. Norm begins with 80-grit, then moves on to 100, 120, 150 and 180. Finally, Norm finishes with 220. The grit number is usually smaller with most sandpapers. The temptation is to skip a grit in the sequence 😉 “People get impatient,” Norm says 👍 “They think a surface feels okay, but after the finish goes on, every flaw and scratch pops out.” [1]
40 – 80 Grit: Coarse. To remove scratches and imperfections, 40 to 80 Grit is recommended. It is fine to use abrasive sandpaper, but it’s important that you take your time as it can cause visible scratches and swirls in wood. For surfaces with a thick, old coat of paint or stain on them and for those that are very scratchy, I prefer low-grit. You don’t always have to use this girt when you start your project. This is the girt that’s primarily used for. Remove old paint You can also use this technique to remove any scuffs or marks. It is okay to skip this grit for pieces that are in good condition or have thin veneer. Yazmin Roso (Ouagadougou Burkina Faso) last revised this page 79 days back. [2]
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According to the experts, woodworkmag.comLet me now show you how to prepare a wood base for painting. You should start by sanding your usual wood with an 80-grit paper. You can continue the process with either a 100, 120, 150 or 180-grit paper. It’s amazing to finish it off with 220-grit sandpaper. As you notice, a sandpaper’s grit number determines the coarseness of its grit. A smaller grit is preferred for most brands. Number means The more coarse it is. Many people don’t follow this grit pattern. It is understandable that they can get frustrated. This can make it more difficult to finish the job. As a result of impatience in sanding, you’ll see that every little scratch and imperfection on the wood’s surface can pop out as soon as the last coating and finishing are done. [3]
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It is possible to need to choose the sandpaper grit size You should choose the right sandpaper for your material. For example, when sanding wood use coarse sandpaper such as 80-grit and gradually increase in fineness. You can eliminate scratches from prior sanding by moving up to higher grit sizes. To avoid scratching, you might need to use a larger grit size (120) when sanding plastic or other soft surfaces. If you have to go below the rust in order to fix deep scarring, 60-grit is the best paper for auto repairs and other metals. Next, you can increase the grit by 120 to remove any rust stains and shape your body with filler. Then, use a 320-grit fine sandpaper to smoothen the car’s surfaces. For their extraordinary insights, we salute Lacosta Ransom of Nanyang Henan in China. [4]
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Based on a brand new article by hamiltondecoratingtools.co.uk, when using a brush, don’t have it overloaded with paint. You can use the brush horizontally or vertically to draw straight lines (e.g. You can either use a skirting board or vertically to stroke the brush. You can use a skirting board to direct the work in either direction, but it is best not to do so more than once. Use a roller to apply paint (e.g. On a larger flat surface), again don’t load too much paint and apply it with long strokes in both directions along the grain. As before, don’t re-work the area more than once or twice. It’s important to avoid working in conditions that’ll dry the paint too quickly (e.g. When the paint is drying too quickly (e.g., in too hot or too cold conditions). Rolonda Thuman amended the above on August 11, 20,21 [5]
Primer isn’t always required to be sanded. You can also use primer to sand wood. Problem that occurs when you apply primer to wood is that the grain of the wood can rise due to paint interacting The wood will be swelled by the addition of the topcoat. It causes raised grain which can be duller when the topcoat has been applied. It isn’t always a good look. People sometimes like the appearance of raised grain. If you want your wood to appear more natural (raised), then it is best to sand the surface before applying primer. [6]

Article references

  1. https://www.thisoldhouse.com/tools/21015112/choosing-and-using-sandpaper
  2. https://www.markethouserestorations.com/tuesdaytips/2018/12/7/bm8k11gb0sk0mi5vrizngzcb07i41d
  3. https://www.woodworkmag.com/what-grit-sandpaper-for-wood-before-painting/
  4. https://home.howstuffworks.com/home-improvement/repair/what-sandpaper-grit-should-i-use-before-priming.htm
  5. https://www.hamiltondecoratingtools.co.uk/knowledge-room/guides/a-guide-to-painting-wooden-surfaces/45
  6. https://pittsburghsprayequip.com/blogs/pittsburgh-spray-equipment-company/sanding-primer-before-painting-wood-a-complete-guide
Mae Chow

Written by Mae Chow

Passionate about writing and studying Chinese, I blog about anything from fashion to food. And of course, study chinese! I'm a passionate blogger and life enthusiast who loves to share my thoughts, views and opinions with the world. I share things that are close to my heart as well as topics from all over the world.

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