Hay rake teeth testing machine.
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Previously:
https://www.homemadetools.net/forum/...376#post196559
https://www.homemadetools.net/forum/...302#post169365
https://www.homemadetools.net/forum/...521#post122904
https://www.homemadetools.net/forum/...274#post161493
https://www.homemadetools.net/forum/...705#post159507