I think that's a student- or novice-made part that just went wrong as others have said. I bet the vees were filed in the wrong faces by mistake then corrected. That the short vees are on opposite sides when it's assembled is of no consequence, although it might hold taps better if the sides were filed down flat.
We all made what would seem like 'idiot' mistakes back when we knew little or nothing.
We all made what would seem like 'idiot' mistakes back when we knew little or nothing.
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