The Klingon ship as mentioned elsewhere is DEAD. Had some bad exp with someone claiming this and that and I cannot, not think about that any time I work on it. So it is in the toilet and flushed. I do have urges to work on something like it so who knows.
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The tail is altered to match up to canon as well as to retain a flat profile. It was also altered to remove tonnes of useless surface and interior volume, BUT mostly because I wanted the look of that the flat profile creates when seen at various angles.
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Madman I have replied to you over at DA I however no longer use it for anything. If you need more details I sent contact info to you via the note system so use that for further communication and plz do not hand it out.