2024-04-11, 01:16 PM
If you scratch the MJF printes oiece, it will show black under the gray.
That process is so funky. They put a thin layer of white powder, print on it a layer of "special chemical that absorb UV" (black ink), blast it with UV so the "specially processed" (inked black) powder heat up and fuse with the layer under it while the other part processed with chemical to repel UV (white ink? Nothing?) stay powdery then they do the next layer.
The stone gray color when it's unprocessed it because it's the powder at the edge of the area inked black. I have a low-poly T65 printed quite large in MJF, a corner of the nose snapped and the inside was much darker than the outside. Quite the oppopposite of say anodized aluminium that would scratch mirror finish
That process is so funky. They put a thin layer of white powder, print on it a layer of "special chemical that absorb UV" (black ink), blast it with UV so the "specially processed" (inked black) powder heat up and fuse with the layer under it while the other part processed with chemical to repel UV (white ink? Nothing?) stay powdery then they do the next layer.
The stone gray color when it's unprocessed it because it's the powder at the edge of the area inked black. I have a low-poly T65 printed quite large in MJF, a corner of the nose snapped and the inside was much darker than the outside. Quite the oppopposite of say anodized aluminium that would scratch mirror finish