I can't open the attachements
Ok. Some pics here. And before anyone asks what the bulge in the center rib is, it was an experiment to see how malleable the plastic is in an attempt to snug up the rib plastic to the bottle a bit so the threads don't get stressed. I bailed on that idea. That was the same day I made the beer can ground ring, if you catch my drift. LOL
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Hmmm. Not sure why these came out as attachments, but oh well.