Says Lin, "Cast iron has a similar character to people: the passing of time produces a multiplicity of qualities and textures." He loves especially the process of rusting, whereby the smooth surface gradually transmutes into many-colored layers of disintegrating material. When rusty pink shades into red-orange, the surface of the work blushes with a soft warmth.
「生鐵跟人一樣，會隨著時間而有不同的變化，」林良材尤愛欣賞鏽蝕過程中，平滑表面逐漸剝落後的層次肌理，當鏽粉顏色轉為橘紅色系時，作品益顯柔和、溫暖。