Blue is in her workshop doing a little welding. It seems to me that she probably needs more tools than a hammer, saw, and some kind of wire cutters maybe to actually make a whole giant robot, as we see is attached to that arm later on. I don’t know if I actually knew I was going to use a giant robot in a big fight yet when I had drawn this comic, but it seems likely because that is kind of a strange design for a robot arm otherwise.