loft/sweep ?
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 From:  jetblast
6485.5 In reply to 6485.4 
Hi,
Wow ! Very nice !! But lets say that I needed the surface to follow the lower edge (the side view trim line) all he way around. It looks likes the surface pulls away a bit towards the rear. I tried to use the trim line as a scaling rail but it doesn't work. What you've done is good enough for my needs but I was just wondering ...

Thanks for your time.



bz
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 From:  Michael Gibson
6485.6 In reply to 6485.5 
Hi bz,

> But lets say that I needed the surface to follow the lower edge (the side view trim line) all he way around.
> It looks likes the surface pulls away a bit towards the rear. I tried to use the trim line as a scaling rail but
> it doesn't work. What you've done is good enough for my needs but I was just wondering ...

That's why it can be good to make the sweep profile stick down a little ways past the trim line instead of trying to skim it directly along it, so that there's a little bit of extra material all around that then gets trimmed. That tends to be the easiest way to make sure it all matches up with the trim profile, with the profile cutting some material away from the entire surface.

Let me know if that does not make sense.

- Michael
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 From:  jetblast
6485.7 In reply to 6485.6 
Hi,
I'm not seeing the surface staying true to the other sections or the lower line. Is it that there are too many sharp directional changes (like you said) and that maybe it has to be broken up into smaller areas to get a very accurate surface ?

Thanks for your time.



bz
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 From:  Michael Gibson
6485.8 In reply to 6485.7 
Hi bz, so that's normal that the result won't necessarily completely hug to some other lines that you've drawn - that final edge is now being generated by a projection of a side curve rather than coming directly from those 3D curves that you've drawn. It should be precise in the sense of it having the same side profile as the cutting profile though.

That's kind of a normal part of this type of modeling in general - many times the final edges that you produce are not things that you draw directly but rather come from intersections between surfaces.

If you want to control it further you'd put some more work on adjusting the surface shape.

Maybe I'm not entirely understanding what you are objecting to here though....

- Michael
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 From:  jetblast
6485.9 In reply to 6485.8 
Hi,
No objections here. This is a great program ! I'm still so new to it that I don't really know what to expect.

Thanks again for your help.


bz
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