The welding chamber is a massive and very complicated piece of machinery. The chamber itself isn't just a box, it handles purging of atmospheric gas and replacement with inert gas for welding, it has an ante-chamber for handling and passing frames in and out, it contains a robot welder, and a robot positioner plus the computers and the human-machine interfaces. You don't quickly bolt that together from what you have lying in the garage. The process requires specialised knowledge and expertise, and is being done by a team from the designer of this highly complex piece of machinery. Just delivery alone from the designer's factory to the bike factory took weeks in multiple huge shipping crates. Assembly and commissioning will take a wee bit longer than taping together a cardboard box.