With a proper 7° curve and fences you could have a Magic Butt Trumpet.
![](http://i1271.photobucket.com/albums/jj622/aerohead2/HPIM1716.jpg)
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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