Normally we have two kinds of charcoals, black charcoals and white charcoals. It is almost like a comment sense to know that charcoals are black and there is really none people are curious about how black charcoal is made, so I am going to find about how the white charcoal is made. White charcoal is made by carbonizing the wood at a moderately low temperature, then, near the end of the process, the kiln temperature is raised to approximately 1000 °C to make the wood red hot. When making white charcoal, you need to be quite skilled in removing the charcoals, which have turned deep red, from the kiln and quickly smother it with a covering of powder to cool it. The powder is a mixture of sand, earth, and ash. This will then give a whitish color to the surface of the charcoal. This is where the name "white charcoal" was derived. The quick rise in temperature, followed by quick cooling, burns up the outer layer of the wood leaving a smooth hardened surface. It is also called a "hard charcoal".
I really appreciate that how smart we as human beings are, and how critical we are. It is definitely a great moment for inventing the white charcoal. I haven’t used the white charcoal yet but I can see it will be really power in the process of drawing. And now, I just come up with an interesting idea of using White Charcoal to draw on the black paper. In that way, I can have the darkest dark with the pure white charcoal on the paper. Using the white charcoal for drawing the objects’ outlines, since the black is there already, so I can just leave the shade part but work on the area where I want it to be less black.
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