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Looks good... I printed one in ABS off of Luis's drawing, but I printed it flat, so the layer lines allowed it to leak past. I just printed a new one, oriented properly, in TPU, and that may do better, but I currently have a DIY hope page style on the loop. Testing the TPU plug will have to wait till next pool session. The Factory mouthpiece I have may also be worn on the inner bore.@lexvil reminded me that I have information for this thread, thanks to my new acquisition. A sample of a "flip flop" mouthpiece insert. Next to a factory insert. Noted that my bench could use a dusting.
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