Dr Brown's Bottle Ring
grabcad
So, my dog has a thing for stealing bottles and chewing up the nipples and rings. The rings are the only replacement part that you CANNOT buy anymore. They simply don't make them. Modeled this up tonight, complete with threads. The threads are not any standard I recognize (though I'm not expert), so I modeled with a best approximation of what I could measure without direct access to measure the threads with my calipers because they're too large to reach in there. Feel free to give feedback, and I can make adjustments. My 3D printer isn't working, so I can't try it myself yet.
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