Hydrophobic knife cutting droplet.
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Previously:
https://www.homemadetools.net/forum/...572#post193279
https://www.homemadetools.net/forum/...508#post177848
https://www.homemadetools.net/forum/...773#post206357
https://www.homemadetools.net/forum/...833#post137110
https://www.homemadetools.net/forum/...988#post129707
