What are the tips and precautions for using sand paper when sanding furniture by hand?1. Skills:Choose the right sand paper: When sanding furniture by hand, choosing the right sand paper grit is crucial. The grain size of the sand paper determines the fineness of the sanding. Coarse sand paper (such as No. 80 to No. 120) has larger particles and is suitable for removing large flaws, old paint layers, rust or uneven parts on the furniture surface. This type of sand paper quickly and effectively removes stubborn stains and unevenness, laying the foundation for more detailed sanding later on. However, when the surface of the furniture is already relatively smooth and requires further smoothing, fine sand paper (such as 180 to 320 grit) is needed. Fine sand paper has finer particles and can sand the furniture surface more finely, making it smoother and more delicate. In addition, for furniture that needs to achieve a mirror effect, you can also choose finer sand paper (such as 400 to 600 grit) for final polishing.
Cut the sand paper: In order to facilitate hand holding and operation, the sand paper usually needs to be cut to a suitable size. When cutting, you can determine the size of the sand paper according to your personal hand shape and habits. The cut sand paper should be able to be easily held in your hand while maintaining enough area to cover the surface of the furniture that needs to be sanded.
Fix the sand paper: To ensure the stability and safety of the sand paper during the sanding process, you can use a sand paper clip or fix the sand paper in your hand by hand. The sand paper clip is a tool specially used to fix sand paper, and can easily adjust the angle and position of the sand paper. If there is no sand paper clip, you can also fix the sand paper in the palm of your hand and use the flexible control of your fingers to ensure the stability of the sand paper and the directionality of sanding.
Sanding direction: When sanding, you should follow a certain direction. You can sand from left to right or from right to left to maintain the uniformity of the furniture surface. Avoid sanding the same location multiple times in a row to avoid uneven surfaces or over-grinding. During the polishing process, the polishing direction can be appropriately adjusted to ensure that all parts of the furniture surface are polished evenly.
Change the intensity: During the polishing process, the intensity should be changed as needed. When it comes to removing blemishes and uneven surfaces, increase the intensity to remove stains and unevenness quickly. However, when further smoothing and sanding, the intensity should be reduced to avoid damaging the furniture surface. Especially when using fine sand paper for final polishing, the intensity should be gentler to achieve a more delicate and smooth effect.
2. Things to note:Maintain the flatness of the sand paper: Before use, check the flatness of the sand paper. If it is twisted or damaged, replace it in time to ensure the sanding effect.
Control the sanding pressure: Too much pressure may cause excessive wear or overheating of the furniture surface, and even lead to deformation and cracks; too little pressure may result in poor sanding results. Therefore, appropriate pressure should be controlled during the sanding process.
Wear protective gear: Sanding creates a lot of dust and debris, which is potentially harmful to the respiratory system and eyes. Therefore, protective equipment such as dust masks, goggles, and gloves should be worn when sanding.
Clean the work area: Before starting to sand, make sure the work area is clean and free of debris, so as not to affect the sanding effect and subsequent steps.
Replace sand paper regularly: As sanding progresses, the particles of the sand paper will gradually wear away, resulting in a decline in sanding effect. sand paper should be checked and replaced regularly.
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