Traditional old scraper

The putty powder for interior and exterior walls needs putty to fill the defects such as depressions, cracks, small holes and scratches on the surface of the object before painting. Scraping putty requires various tools, such as horn knife, Shantou grey knife, rubber scraper, steel scraper and so on. This article will introduce the skills of scraping putty to help you master this skill better.

Find the right angle

When scraping putty, press the scraper hard to make it incline at 50-60 degrees with the surface of the object. When the putty under the scraper decreases, slightly reduce the angle of the scraper to form an inclination of 40-50 degrees, so that the putty can be scraped more smoothly.

Choose the right tool

Scraping putty requires various tools, such as horn knife, Shantou grey knife, rubber scraper, steel scraper and so on. Different tools are suitable for different faces and angles and need to be selected according to the actual situation.

Check whether the scraper is straight.

It is important to check whether the scraper is straight before you start scraping putty. If the scraper is found to be defective or uneven, it needs to be repaired before it can start working.

Find out the times of scraping putty.

The frequency of scraping putty depends on the smoothness of the surface. If the requirements are high, you need to shave more times. There are two forms of putty scraping: partial repair and comprehensive batch scraping. The putty used for local repair should be thicker, and the putty scraped in whole batch should be thinner.

Pay attention to the coating thickness and drying time.

The coating thickness of oily putty shall not exceed 0.5mm at a time. When scraping the first layer of putty, the material should not be too thin. After each putty scraping, polish or scrape the putty for the second time after it is completely dried.

Don't scribble back and forth many times.

Remember, the scraper can only scrape back and forth 1-2 times in the same space, and cannot scribble back and forth many times. Only in this way can we ensure the effect of scraping putty.