Problem creating shell

[DAHammond]

I am having problems when trying to create a shell on the shaded face. I want the shell to be 1.5 mm thick. For some reason inventor modifies the size of the case shell (the box wall thickness increases) when I do this. Does anybody know how to create this feature?

Thanks

Daniel

[JDMather]

Bad news here - almost everything you have done on this part is done incorreclty.
I will post corrected part later today - while I fix it for you - you might go through these suggestions-

1. Sketch1 is not constrained.  Make use of symmetry about the origin.

http://home.pct.edu/~jmather/SkillsUSA%20University.pdf
http://inventortrenches.blogspot.com/p/inventor-tutorials.html
http://wikihelp.autodesk.com/enu?adskContextId=HELP_TUTORIALS&language=ENU&release=2014&product=Inve...

Fillet1 does not make sense (probably should occure before Shell1.

Sketch7 is sick (pink geometry).

Notice all of the i in circles indicating issues with the model.

Shell is global - effects every feature occuring before the shell, not just Extrusion6, but everything, the entire model.

[DAHammond]

thank you

[DAHammond]

Thank you. I have redrawn the part and its created the feature no problem. I've attached it here and would appreciate any comments on the quality of the modelling. Thank you.

[JDMather · Accepted solution]

That was fast, but you are still doing too much work by not making use of symmetry about the origin planes.

I noticed you are using an early version of Inventor - refer to this document instead of earlier links.

http://home.pct.edu/~jmather/AU2007/MA105-1L%20Mather.pdf