Well, my build time may not be a reference because it includes design, drawing, building, shooting, etc., especially shooting videos is very time-consuming (by the way, this kit will have a tutorial video coming out one after another), so it took about 7 years to design this kit (of course, not all of these 7 years are used in this kit, and I usually have a lot of other things to deal with). As for the jigs, I can only say that the size data of each ship is different, and it is impossible to achieve universal use.