The top of the wingy-thingy is about right (~12°), the tumble-home of the sides is good.
I'd stretch a black mesh over the opening to make a perforated base plate. Easily undone for A-B-A testing.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
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