Lol I'm with you Mr I'm not an expert on any subject matter trust me.
I would implore anyone who thinks they can just put a dental connector in a lathe and tuned it to please give it a shot for yourself.
JC27, your first pick as I'm sure you now understand, is a three hole connector but the small hole is on the wrong side. This could be fixed but mounting those small connectors on evan a mini lathe would be dangerous and not worth it. I have tried both methods with the later being a hacksaw and hands down mounting the connector on a vise then cutting the back half off is way more convenant. After the cut you could use a grinder to even out your cut then a file to smooth it out a bit, flip it over and use a metallic paint to finish it.
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