Fact Checking
Well-Known Member
I did read it but could not find any indications that its the 70 to 1 castigates machine other than the 61 tons pressure but even that is not one. Not an expert in that technology though.
The page says "6100t Tonnen", with 95 kg of material per "charge" (injection shot I suspect).
In principle it's possible to use multiple shots, but I'd agree with @KarenRei that the part mass is 95 kg - definitely not whole-body. Still just a few parts of up to 95 kg parts reduce the number of weld points and the parts count by an order of magnitude.
Patent filing notwithstanding, IMO there's no economic need to cast the whole body in a single step IMO. It would also make QA harder: this casting machine comes with a Röntgen machine to test for bubbles/cavities/cracks non-destructively, doing that on a whole car size is very challenging.
So my hypothesis is that Tesla settled on a good equilibrium between cost and benefit of cast part size: both too large and too small body parts sizes has disadvantages, there's a golden middle.