As anyone who has used PVC trim knows, the product is basically S4S, i.e. shiny and smooth on all sides.
As anyone who has ripped PVC trim also knows, the newly exposed surface is pretty rough.
Well, as of today I can attest that you can't just sand the exposed surface and get it anywhere close to the shiny and smooth surface of the uncut product - not that I really expected that I could.
However, I really didn't expect to see tiny voids show up - little circles like there were bubbles in the material. They can be sanded out, but you never know when some more might show up.
So how do they get such a smooth surface when they manufacture the product? At first I though that maybe it was a "molded product" but then I saw this at one Cellular PVC company's site:
"And because we make custom shaping knives, we can provide virtually any moulding style desired. "
So, how do they get the final surface so perfect? Why don't those little voids show up when they are milling the product?