Specialized fabric cutting machines.
https://www.youtube.com/watch?v=eANDNhf52uo
Previously:
https://www.homemadetools.net/forum/...942#post124936
https://www.homemadetools.net/forum/...912#post119710
https://www.homemadetools.net/forum/...860#post156371
https://www.homemadetools.net/forum/...981#post144910
https://www.homemadetools.net/forum/...913#post144604
