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I had my running boards off for a while. Last week I went to put them back on, but first I wanted to clean them up and do something about the skuffs.
While cleaning I noticed they are fabricated using the same method as milk jugs. That's right they are blow molded. A LOT thicker than the average milk jug, but never the less, blowmolded. Nothing wrong with that. It was just unexpected.
The second thing I noticed is that the silver color seems to have been in place before the weld seam was trimmed, no color on the cut edge. Usually that trimming takes place in the molding. I think that means the color was on the plastic before it was molded. I've painted polyethylene before, not much sticks to it.
Any way back to the skuffs. I was able remove the black marks no problem, but in spots (half dozen or so) the overcoat and paint was gone. Right down to the plastic. The color and over coat is so very thin. The plastic's color while not matching has low enough contrast, that it's only noticable close up.
While cleaning I noticed they are fabricated using the same method as milk jugs. That's right they are blow molded. A LOT thicker than the average milk jug, but never the less, blowmolded. Nothing wrong with that. It was just unexpected.
The second thing I noticed is that the silver color seems to have been in place before the weld seam was trimmed, no color on the cut edge. Usually that trimming takes place in the molding. I think that means the color was on the plastic before it was molded. I've painted polyethylene before, not much sticks to it.
Any way back to the skuffs. I was able remove the black marks no problem, but in spots (half dozen or so) the overcoat and paint was gone. Right down to the plastic. The color and over coat is so very thin. The plastic's color while not matching has low enough contrast, that it's only noticable close up.