Do you use a shovel or a blue tube to put sand into the gold wire and onto the drawing board? Have you noticed how much glue (the mixture of sand glue water) is in the sand? Is it dry sand or does it have some water in it?
If the sand is very dry, on the screen, it can be said that it is difficult to smooth;
If you bring some water, by shaking the drawing board a few times or tapping the bottom of the drawing board, it will make the sand in the vibration, tend to level out a little. But a large area of painting, relying on this method is basically impossible.
So how can I do that?
In fact, in life, we have a revelation, but you did not care, or did not go there to think, what revelation?
Have you seen the sea? Ever been to the beach? Have not been to the seaside, the river, the river should have been there? You should have seen the beach by the sea, the beach by the river, why the sand is so smooth after the water is washed?
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Under the action of running water, the sand becomes very smooth and smooth. This is exactly what we need for our colored sand painting!