What general precaution should be taken when storing sheet metal?

When storing sheet metal, one important precaution is to remove sharp edges and burrs. This step is essential for several reasons. Firstly, sharp edges and burrs can pose safety risks to anyone handling the sheets, as they can lead to cuts and injuries. Furthermore, these imperfections can cause damage to other materials when sheets are stored in close proximity, potentially leading to scratches or other surface defects.

Properly preparing the edges of the metal sheets also ensures that they can be handled more safely during transportation and installation, and it helps maintain their integrity over time. Additionally, this practice can prevent issues during the machining or fabrication processes, as sharp edges can interfere with tools and equipment.

The other options, while they all touch on aspects of material handling and safety, do not address the critical need for ensuring the metal surfaces are safe and intact during storage. For instance, storing sheets indefinitely or stacking them without proper limits can lead to warping or damage. Keeping raw edges facing up can increase the likelihood of accidents and damage as well. Therefore, focusing on removing sharp edges and burrs provides a practical and effective approach to safe and conscientious sheet metal storage.