I was always a Lego kid (and I dabble as an adult- those Mindstorms robotics sets are a hoot) so this was a fun read. I knew ABS was the main material they used

I was always a Lego kid (and I dabble as an adult- those Mindstorms robotics sets are a hoot) so this was a fun read. I knew ABS was the main material they used, and the bendy Bionicle parts must have been made of something else, but I had no idea that the whole story was this complex. It's remarkable that they can manage such an enormous catalog of parts, while also handling all the fiddly variations in manufacturing processes for each material. Good stuff.