help for " shell" All  1  2-13

 From: Michael Gibson 25 Sep 2006  (2 of 13)
 133.2 In reply to 133.1 Hi Frank - shell can be used to change an object to have a certain "wall thickness". The general way that you use it, is you have a solid object, then you select a face of the object that you wish to have as an opening (you select faces by doing a second click on an object). Then run shell. You can now enter a distance, or you can pick 2 points and the distance between the points will define the distance. This will create a result like this: You can also use shell to thicken a surface into a solid, here is an example: Please let me know if you need more information. - Michael Attachments:

 From: Frenchy Pilou (PILOU) 25 Sep 2006  (3 of 13)
 133.3 In reply to 133.2 On the shell polygon example Seems the bottom side face still lives ! Is that normal? If you kill it, volum will not bottom closed on the thick wall :) EDITED: 25 Sep 2006 by PILOU

 From: Michael Gibson 25 Sep 2006  (4 of 13)
 133.4 In reply to 133.3 > Seems the bottom side face still lives ! > Is that normal? Yes because in this case it wasn't selected. If a face is not selected, it will survive and have a wall thickness on it, it doesn't matter if it is on the side or the top or the bottom, it only depends on the selection. Only the selected faces will become openings. If you want to have a hole going all the way from the top to the bottom, then you could get that by selecting both the top and the bottom faces before doing the shell. But you don't have to only select top or bottom pieces - for example here I selected the top face and two sides: The other thing is that it is possible to just select the whole solid object instead of any faces, and this will create a hollow cavity within the solid. - Michael Attachments:

 From: Frenchy Pilou (PILOU) 25 Sep 2006  (5 of 13)
 133.5 In reply to 133.4 >If you want to have a hole going all the way from the top to the bottom, then you could get that by selecting both the top and the bottom faces before doing the shell. That's the trick :) < One face + 2sides Tricky indeed! Seems shell a very poweful function in expert's hands :) < The other thing is that it is possible to just select the whole solid object instead of any faces, and this will create a hollow cavity within the solid Yes cavity is inside but not very easy to select something after that :) EDITED: 25 Sep 2006 by PILOU

 From: solo (DEEPURE) 25 Sep 2006  (6 of 13)
 it'a great tool!!!

 From: Michael Gibson 25 Sep 2006  (7 of 13)
 133.7 In reply to 133.5 > Yes cavity is inside but not very easy to select something after that :) When you create a cavity in this manner (through shell or by boolean), then the cavity becomes just one portion of the entire object, so it is selected if the entire object is selected. So for instance if you want to do a boolean with the object that contains the cavity with another object, you don't have to do anything special to select the inside parts, it's all one object. But it can be difficult if you want to do something that operates on a single face of the cavity, that's when you'll have to hide some of the outer faces. - Michael

 From: Frenchy Pilou (PILOU) 25 Sep 2006  (8 of 13)
 133.8 In reply to 133.7 thx for the precisions! Attachments:

 From: Michael Gibson 25 Sep 2006  (9 of 13)
 133.9 In reply to 133.8 Pas de problĂ¨me! - Michael

 From: Schbeurd 25 Sep 2006  (10 of 13)
 133.10 In reply to 133.9 Thanks for the trick... I was not very happy with the "Shell" command so far because I was trying to give depth to objects like the one on the left (see enclosed image). With such object wholly selected, it seems that the computer performs calculations for hours and nothing happens. With the object on the right, the "Shell" operation was performed in a few seconds (on an old computer...) Is it normal that MoI performs differently for both objects ? After all, they are very similar in shape. - Schbeurd Attachments: