I have not been in contact with Vaporesso directly. All of my info has come from the Manual, Heaven Gifts, the Internet, or my own use.
You make an excellent point. Except for the blackness from where the "cotton" was burned when I Dry Burned it to Clean it, I found no dust, grit, or particles. I pulled the "cotton" between my thumb and index finger and nothing came off. So I think you are probably right. The "splintering" look of the Ceramic cylinder on that one side was probably a manufacturing defect in the Sintering process.
The coil is pre-wrapped and held in place somehow. It is centered in a Sintering Mold and the Ceramic Powder is poured in. Then the Sintering is done to turn the Power into the solid Ceramic cylinder. The coil had been partially exposed, but that could have been changed by now to keep the entire coil inside the Ceramic cylinder.
Sinter:
Cause (ores or powdery metals) to become a coherent mass by heating without melting.
Sintering:
A high temperature process for fusing powder together.
Sintering is the process of compacting and forming a solid mass of material by heat
[1] and/or pressure
[2] without melting it to the point of liquefaction.
Sintering happens naturally in mineral deposits or as a manufacturing process used with metals, ceramics, plastics, and other materials. The atoms in the materials diffuse across the boundaries of the particles, fusing the particles together and creating one solid piece. Because the sintering temperature does not have to reach the melting point of the material, sintering is often chosen as the shaping process for materials with extremely high melting points such as
tungsten and
molybdenum. The study of sintering in metallurgy powder-related processes is known as
powder metallurgy. An example of sintering can be observed when ice cubes in a glass of water adhere to each other, which is driven by the temperature difference between the water and the ice.[
citation needed] Examples of pressure-driven sintering are the compacting of snowfall to a glacier, or the forming of a hard snowball by pressing loose snow together.