Piston ring installation jig.
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Previously:
https://www.homemadetools.net/forum/...616#post225616
https://www.homemadetools.net/forum/...496#post166517
https://www.homemadetools.net/forum/...845#post223752
https://www.homemadetools.net/forum/...267#post169222
https://www.homemadetools.net/forum/...145#post141459
