Manufacturing paper cups.
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Previously:
https://www.homemadetools.net/forum/...669#post201604
https://www.homemadetools.net/forum/...028#post153242
https://www.homemadetools.net/forum/...879#post140452
https://www.homemadetools.net/forum/...2625#post96734
https://www.homemadetools.net/forum/...502#post122792
