Inventor General Discussion

Inventor General Discussion

Valued Contributor
Posts: 72
Registered: ‎11-13-2003
Message 1 of 5 (405 Views)

Acknowledged loft/shell issue Inv 2010

405 Views, 4 Replies
07-22-2010 10:15 AM

Hello all, thought I would pass on an acknowledged bug in a lofted/shelled solid in Inventor 2010. Bear in mind that I have been doing this workflow since Inventor 5.3  or so. Imagine my surprise when I installed 2010 and found out I had to workaround this issue as best I could. Imagine my larger surprise after talking with my reseller (good people) that Autodesk acknowledged the bug, but they have not issued a fix for it. This bug is not present in 2008 (previous release used) or 2011 (have not upgraded yet because of workload and a couple of other issues). This was acknowledged as a bug sometime in January 2010. Open the attached loft1.ipt and pull down the EOP. edit sketch1 of Loft1. change the 3 to 3.5 and the 5 to 5.5 and see what happens to the corners. I am told that Inv 2011 does not have this bug, only Inv 2010. I will stop now before I really get going on a rant


Mike Tibbets

Distinguished Contributor
Posts: 121
Registered: ‎09-06-2006
Message 2 of 5 (395 Views)

Re: Acknowledged loft/shell issue Inv 2010

07-22-2010 11:02 AM in reply to: miketibbets

hmm...that's weird.


Work around was fairly simple, but it the way you've done it seems the most logical to achieve your end result and that way is obviously not a proponent of change.

Larry Marshall
2013 Product Design Suite Ultimate
Windows 7 Sp1
Intel(R) Core (TM) i5-2400 @ 2.00GHz
6.00 GB of RAM
AMD Radeon HD 6570
Posts: 2,099
Registered: ‎04-30-2008
Message 3 of 5 (384 Views)

Re: Acknowledged loft/shell issue Inv 2010

07-22-2010 11:51 AM in reply to: miketibbets

Hi! Indeed, I see no reason why this case should fail. I have forwarded it to development for review. Regarding how to make it work for now, there are two workarounds I can think of.


#1, Edit the loft->check Merge Tangent Faces.

#2, Instead of creating shell, create an offset surface and split or sculpt the body to hollow it.




Johnson Shiue (
Principal SQA Engineer, Inventor
Mechanical Design
Autodesk, Inc.

Valued Contributor
Posts: 72
Registered: ‎11-13-2003
Message 4 of 5 (379 Views)


07-22-2010 12:06 PM in reply to: johnsonshiue

I agree, there are multiple ways to work around this issue, which is what I have been doing for the last ummmmm 7 months. If was the finished product, that would not be a problem, however this is the beginning of the solid, and other features are added, etc. Workarounds are just that, more work to get around the issue.


Thanks for your response


Mike Tibbets

Valued Contributor
Posts: 72
Registered: ‎11-13-2003
Message 5 of 5 (302 Views)

Re: Acknowledged loft/shell issue Inv 2010

08-13-2010 05:24 AM in reply to: johnsonshiue

Johnson, first of all, thanks for your initial response. Have you heard any news about the status of this issue?


Thanks in advance

Are you familiar with the Autodesk Expert Elites? The Expert Elite program is made up of customers that help other customers by sharing knowledge and exemplifying an engaging style of collaboration. To learn more, please visit our Expert Elite website.
Need installation help?

Start with some of our most frequented solutions or visit the Installation and Licensing Forum to get help installing your software.