If you drop one of your favorite steel planes and dent the sole, metal displaced from the dent will likely leave a raised ring around it that can scratch wood. Simply rub the surface with a fine honing stone to remove the raised area. Once done, you can ignore the remaining dent, oil the unplated surface, and put the plane back to work.
If you are installing new shop lights or positioning a workbench in your shop, a simple test can help you find the position for best illumination. Hold a pencil or dowel vertically, then check for shadows. Reposition your set-up to reduce shadows as needed. If you have strong shadows on one or more sides, consider buying more lights.