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For aesthetic reasons, the paint thickness is in the micron range. If the substrate is not only, the paint will not make up for it.
You can do without sand, water sand is generally used as a base for 240 (mainly consumed), and 400-600 is used for the last pass (the amount is very small).
Are you a furniture factory, newbie? If it's a master, this one is very simple. Nowadays, furniture factories generally use spray paint, not hand brushing. >>>More
It is recommended to use semi-matte, general grade furniture, and the effect is better. >>>More
The sinking place is generally a nail hole or a hole, which needs to be filled with ash and then painted after grinding. If it takes a long time or is not well repaired, it will sink.
After installation, paint should be used for protection, and it is easier to install after brushing.