Weird shell bug
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 From:  Frenchy Pilou (PILOU) 18 Oct 2006  (2 of 13) 
172.2 In reply to 172.1 

Funny I have made an animation some days ago with quasi the same form :)
Not particular problem with it :)
http://rapidshare.de/files/36976569/test.zip.html

6.7 Meg Avi Zipped (Press free at the page bottom right side : Wait decrease second and follow instructions
Very speedy loader when you have obtain your ticket!
(it's a little disconvenient but the free upload is infinite and max size for one file is 100 megas !!!!
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 From:  Thor (MCHANNEMANN) 18 Oct 2006  (3 of 13) 
172.3 In reply to 172.2 
Hi French Pilou,

that's what I took as reference to try, and when I wanted to shell it the nut thing happend

Thor
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 From:  Frenchy Pilou (PILOU) 18 Oct 2006  (4 of 13) 
172.4 In reply to 172.3 

I believe that you must make the inverse
Make the Shell first and after the Boolean Difference with objects ! :)
It's more like than the reality!
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 From:  Thor (MCHANNEMANN) 18 Oct 2006  (5 of 13) 
172.5 
Tried both Pilou...didn't work
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 From:  Frenchy Pilou (PILOU) 18 Oct 2006  (6 of 13) 
172.6 In reply to 172.5 

I believe that I found that 'is not normal :)
Load your object an select your "section"
Section is not a closed section !

But see next for the real solution :)

EDITED: 18 Oct 2006 by PILOU
Attachments:
Attachmentclosed.jpg
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 From:  Frenchy Pilou (PILOU) 18 Oct 2006  (7 of 13) 
172.7 In reply to 172.6 

An another thing :)
I have reload your object
You have made a too large Shell measure!
Try with 0.2 that work!
It's because some angles are too acute!
It was visible on the first image on your section, lines are acrossed :)

But I don't take care of :)

EDITED: 18 Oct 2006 by PILOU
Attachments:
Attachmenthehe.jpg
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 From:  jbshorty 18 Oct 2006  (8 of 13) 
172.8 
Be careful when using "shell". Moi doesn't warn you, but it often will create invalid objects (OK for illustrations, but NOT OK for manufacturing or serious ind design). Invalid objects will make it impossible to do some volumetric operations later. Usually the problem occurs when a fillet is a 3-sided surface. It has much less problems if you take care that all sub-surfaces are 4-sided...
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 From:  Thor (MCHANNEMANN) 18 Oct 2006  (9 of 13) 
172.9 
Thnx a mil for the help

THor
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 From:  Frenchy Pilou (PILOU) 18 Oct 2006  (10 of 13) 
172.10 

It's for that than a message of exceedence angle will be super cool!
Now prog goes in infinit loop...or make some bugs images :)
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 From:  Michael Gibson 18 Oct 2006  (11 of 13) 
172.11 In reply to 172.8 
Hi jbshorty,

> Usually the problem occurs when a fillet is a 3-sided surface.

If you have any examples of this, please post them, I might be able to fix this up.

- Michael
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 From:  jbshorty 18 Oct 2006  (12 of 13) 
172.12 In reply to 172.11 
Hi Michael.

Here is an example file. Both are solid polysurfaces, but the one with 3-sided filleted corners is an invalid object.

jonah
Attachments:
Attachmentbad shelling.3dm
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 From:  Michael Gibson 18 Oct 2006  (13 of 13) 
172.13 In reply to 172.12 
Thanks Jonah - I see the problem, the offset of the 3-sided fillet is not totally clean, the points that are supposed to be all collapsed together at the pole are slightly separated. This is messing up stuff later on.

I think I should be able to fix this up, but I won't be able to give it a try until after the new meshing stuff is done.

- Michael
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