1:37 you get a lot less scratching on the product because it's oil against metal instead of metal against metal as the part is extruded into the form.
Higher tolerances are achieved - I assume because the process achieves a more uniform pressure across the entire sheet rather than at pinch points with a traditional press.
A nice animation here: https://youtu.be/n-ht_5Ysurc
Note the blue layer of liquid against the part.
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