Selecting same faces of derived part

[Anonymous]

I need help, with selecting a face for adding thickness to a face.

The problem is I have a box type shaped part which is hollow and I want to select all inner faces (ideally without SelectSet).

How can I then do the same operation to the same part derived so I get a different wall thickness - what's the best method of getting the faces and collecting the same ones again?

[Anonymous]

Check that I need RefrenceKeyManager. Can someone explain what are the array members from the help file KeyContext & Context Data storing?

When using the thicken feature as bellow:

Dim oThicken As ThickenFeature
Set oThicken = oDef.Features.ThickenFeatures.Add(oFaceColl, Thickness, kNegativeExtentDirection, kCutOperation, True)

Why cant I refrence oFace or SelectSet directly instead of a Face Collection for the face object????

Thanks for viewing.

[Anonymous]

I have referenced the faces, derived the part but get a run time error when applyingI change to thickness on the derived part:

"Run-Time error'-2147418113' (8000ffff)
Method 'Add' of object'_IRxThicknessFeature' failed

[Anonymous]

I don't think I understand exactly what you're trying to accomplish. Can
you provide a picture or an example file?
--
Brian Ekins
Autodesk Inventor API

wrote in message news:5446461@discussion.autodesk.com...
I have referenced the faces, derived the part but get a run time error when
applyingI change to thickness on the derived part:

"Run-Time error'-2147418113' (8000ffff)
Method 'Add' of object'_IRxThicknessFeature' failed