Changes

==General guidelines==

==General guidelines==

In all cases, the bundle should be kept at the center of the grinding wheel. This makes it easier to control the bundle, because the wheel isn’t on quite straight, and it wiggles less at the center than at the sides. Always use gentle pressure when holding the bundle against the wheel, just enough to keep it touching the wheel. Even gentler pressure is helpful when using finer grits, so little that the fibers may not even always touch the wheel, because of the wobble of the wheel. The fibers really do look better after a little time with gentle pressure, because the grit doesn’t dig in as deep. On the plastic grits (at least the five micron grit), it can be helpful to move the bundle around a little bit on the wheel, so as to grind the bundle in different directions. This helps remove striations.

In all cases, the bundle should be kept near the center of the grinding wheel. This makes it easier to control the bundle, because the wheel isn’t on quite straight, and it wiggles less at the center than at the sides. Always use gentle pressure when holding the bundle against the wheel, just enough to keep it touching the wheel. Even gentler pressure is helpful when using finer grits, so little that the fibers may not even always touch the wheel, because of the wobble of the wheel: as the wheel makes one revolution, it grinds the fibers with the part of the wheel slanted toward them and misses them with the part slanted away. The fibers really do look better after a little time with gentle pressure, because the grit doesn’t dig in as deep. On the plastic grits (at least the five micron grit), it can be helpful to move the bundle around a little bit on the wheel, so as to grind the bundle in different directions. This helps remove striations.

==Light Guides==

==Light Guides==