Quenching large gears.
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Previously:
https://www.homemadetools.net/forum/...399#post219097
https://www.homemadetools.net/forum/...992#post179790
https://www.homemadetools.net/forum/...492#post122734
https://www.homemadetools.net/forum/...3582#post99502
https://www.homemadetools.net/forum/...158#post100892
