Bug - Sheet Metal Solid doesn't Follow Default Rule with Second Derive Part

[andrewdroth]

I'm using multi body sheet metal part to push solid bodies to parts in an assembly.

Due to the complexity of the original master part I opted to create a second master for defining the cut profiles needed.

My parts now pull from two derived parts, one pulls the solid body, the other pulls sketches for cut features.

Now I've run into a major bug. The solid in my part will not stay tied to the default sheet metal rule. Whenever I update either of the master parts, all of my derived parts uncheck the 'Follow Default' sheet metal settings, and therefore all of my flat parts are now broken.

I need to be able to lock that setting. How can I fix this?

 

[johnsonshiue]

Hi Nick,

I assume the one that breaks has multiple Derive features, right?

Many thanks!

[NickdeNT2EU]

No just the one derive feature. The part originally in the mutibody master was 2 separate parts then I used the combine feature to make 1 part and did not keep the tool bodies. I used the make component feature to out put all 98 parts and create an assembly.

I think inventor for some reason is seeing 2 bodies in the derived part when there is only 1.

[johnsonshiue]

Hi Nick,

Then it should work. Right-click on the combined solid body -> Set Sheet Metal Rule -> select Default. Make sure the default rule is the correct one.

Many thanks!

[NickdeNT2EU]

Yes I know it should work but it doesn't. My first post I put up is the solution I found to fix the problem.

[sergio_duran]

Problem is still happening. I have the same issue. Once I've used derive twice using two sheet metal files as base components for another sheet metal part (There is a sheet metal part deriving two sheet metal parts), it loses the checked option "Follow Defaults" (it's automatically unchecked) after simple changes.

I also wanted to find the option in the API to force to check it again after simple changes, but it looks like it doesn't exist in API methods and properties.

Thanks!

[Bearded_Engineer]

Running latest 2024 and just had this exact issue. Had to redo my entire part and create a new derived mirror to solve this.

Every update on the base, the follow defaults on the mirror was being turned off. Even though there is just one body.

Now this is just a wild guess, but I get the feeling this might be caused by a flag in the background that just wont reset. Cause I think at one point the basepart was multibody for a moment when I was trying something with a new feature to quickly try an idea. It was set to link sheet metal styles from the beginning.

Turning follow defaults on the mirrored body back on just wont stick. Every update that's pushed from the base just removes it again. Tried everything to fix it, checked all settings and no result. Exact same proces on a different file just works like it should.

[johnsonshiue]

Hi! The issue here is the when there are multiple Derive features (which is allowed), Inventor does not know which source to "inherit" the sheet metal rules from. As a result, it reverts back to default.

Many thanks!

[tony]

Hi,

Of course Inventor does not know which source to "inherit" the sheet metal rules from - it hasn't asked. I would therefore restate the issue thus: Inventor's developers have not yet introduced a mechanism by which the user can determine which part (or solid) to inherit the sheet metal rules from. It seems pretty simple to me.

Thanks,

Tony