More math required. 500,000k cars x 13 body panels per car. Yeah, I get you think it’s a good thing there’s idle time right now based on number of cars currently being produced, but you haven’t a clue what kind of work goes into getting die sets and a brand new, custom built press line for those die sets up and running.
Optimization of those dies and press line takes months just as it takes months to optimize the production line for ramping. Down time right now of that new press line isn’t likely due to ‘we’ve made all the parts we need for this week so shut her down.’ And down time on ModelS/X press lines is highly likely at this stage to be for scheduled maintenance and repair. Otherwise there’d be no need for stamping shops like Thai Summit supplying Tesla because Tesla would just stamp those parts as well since, you know, they have idle press lines.