Yes, the T-slot aluminum extrusions are an improvement to welded structures mainly based on the ease of use and versatility. There is no doubt that welded structures are strong and can also be customized, but the modular nature of T-slot aluminum extrusions is unbeatable. The assembly and disassembly ease offered by the t-slot aluminum extrusions is much higher than you can achieve with welded structures. The versatility of these extrusions encompasses the accessory range and the design options. Even with the simplest tools, one can activate the profiles into something usable, within no time. This is much different from creating welded structures, a process that requires specialized skills and equipment. It doesn’t matter the configuration requirements of the user; there is always a way to tailor the T-slot extrusions to achieve the structure. So, yes, T-slot extrusions are an improvement to welded structures on several fronts.