Still, iron was the first material to let people build truly tall buildings. The Eiffel Tower, for instance, is actually built out of wrought iron. Wrought iron is strong, but also inconsistent and prone to flaws that are impossible to detect until a particular piece fails catastrophically. This is something that happened regularly throughout the nineteenth century, causing factories to collapse on the heads of the workers below and trains to derail or fall into rivers when the bridges they crossed collapsed. Steel, in comparison, is much more consistent, and as soon as people figured out how to make it in large quantities they began using it for everything. In fact, when people say “wrought iron” in reference to fencing, what they are probably referring to is steel fencing that looks like wrought iron. The confusion might also come from the fact that steel is really just iron worked at higher temperatures to ensure an even distribution of carbon.

Another advantage of sliding cabinet rollers is their ease of use. With just a gentle push or pull, the shelves slide in and out smoothly, allowing you to easily access items without any hassle. This can be particularly helpful for individuals with limited mobility or strength, as it eliminates the need to reach or bend to retrieve items from the back of the cabinet. Additionally, the smooth sliding motion of the rollers helps protect delicate items from being jostled or knocked over, ensuring that your cabinet contents remain safe and secure.