- #1
zernikepolynomial
I got this 4x8 ft whiteboard for $150, and it is supposed to be porcelain. The guy I bought it from didn't really know much about it, but he thought it was porcelain because it was very heavy. The guy told me that his wife got it from a used sale for some government building that was being cleared out. The board was old, but it looked in ok shape, so I bought it. Upon closer inspection, there are a few imperfections. There is a tiny scratch or nick near one of the edges, and there is a couple tiny donut shaped imperfections in the surface, with a possible pin hole in the center of them. These imperfect are so small you wont notice them unless you really look for them, such as at a steep reflective angle.
Now, I am not a expert on ceramic enameled steel, but one thing I do know is they are supposed to be difficult to damage and resistant to scratching. I wonder if the donut shaped imperfections were a flaw in the enameling process? Like a trapped air bubble escaping, leaving the tiny ring shapes during the enameling process?
I tried picking at the tiny nick to see if it was stable or not, and I cant make it any worse, so the coating seems super tough. It must have been a pretty strong impact.
Furthermore, I tested the board using a knife to try and scratch the surface (near the edge), but I could not seem to produce a visible or palpable scratch. As far as I know, painted steel boards can be scratched by a metal knife and leave visible damage, while ceramic will generally not unless repeatedly attacked by an abrasive.
Do you think I scored big? This board would probably retail >$500. It looks closest to a best-rite porcelain whiteboard, which is really expensive.
Now, I am not a expert on ceramic enameled steel, but one thing I do know is they are supposed to be difficult to damage and resistant to scratching. I wonder if the donut shaped imperfections were a flaw in the enameling process? Like a trapped air bubble escaping, leaving the tiny ring shapes during the enameling process?
I tried picking at the tiny nick to see if it was stable or not, and I cant make it any worse, so the coating seems super tough. It must have been a pretty strong impact.
Furthermore, I tested the board using a knife to try and scratch the surface (near the edge), but I could not seem to produce a visible or palpable scratch. As far as I know, painted steel boards can be scratched by a metal knife and leave visible damage, while ceramic will generally not unless repeatedly attacked by an abrasive.
Do you think I scored big? This board would probably retail >$500. It looks closest to a best-rite porcelain whiteboard, which is really expensive.