A small article on the 1st page on how this works (with pics or a video) would enlighten us.
Have a general search on youtube or something (should be plenty of suitable ones), I imagine most places aren't too keen on letting people film what current machines they are using etc for various reasons (probably because they are VERY expensive and the set-up can take a lot of expense to get right). A general overall would be interesting though, has been a while since I've walked down a pick and place line.
I believe that in fact they use little imps to assemble the boards anyway, since the chips are far too small for the machines, it is a lot easier to train an imp with a little soldering iron to do the job and to get under the BGA to ensure all the connections are correct. Little known fact, is that these are special Raspberry Pi imps, specially bread for the purpose.
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