homemade quail cage

Speaking from personal experience as a welder, steel is a lot easier to work with than iron. If someone manages to break a piece of steel (which isn’t easy), repairing it is a simple matter of properly positioning the pieces and welding them together. In contrast, repairing a cracked or damaged piece of iron means heating the whole piece back up to nearly molten temperatures, then carefully welding it in stages--with pauses to reheat the piece--while sometimes giving it a whack with a hammer and hoping you don’t hear the tell-tale ping of a crack forming somewhere else. Iron is a finicky material.

Cast iron is vulnerable to rusting if it does not have a protective coating of carbonized oil, a process known as seasoning. 

When discussing the sheer volume of these objects, it’s important to consider the industries that contribute to their production. The automotive industry is a significant player, with millions of cars produced annually, each typically containing four wheels and at least two doors. In contrast, think about the production of office buildings, residential areas, and public infrastructures these structures have countless doors that offer access to different spaces.

Modern aluminum profiles can be desgined with thermal breaks (non-metallic parts of the profile) to reduce thermal conductivity. This helps to improve the thermal insulation performance of windows and doors, thus achieving the purpose of energy saving and comfort.

Despite these advantages, metal taps can be more expensive and may require more effort during installation due to their weight and complexity. Moreover, certain metals are susceptible to corrosion, especially in harsh environments, necessitating the use of protective coatings or alloys.