How to I flip the orientation of a split

jon_loschke

I split an initial monolithic part in two using a surface and then renamed each part.  I then created hundreds of features to refine each part.  I had a manufacturing issue that forced me to change the original split surface (extrusion of a sketch).  But this new surface, I guess, has its normal flipped compared to the original and the split now flips the two part references.  It's not just that their names are reversed, but all feature definitions that follow (hundreds!) reference the wrong part which totally fails.  I believe, naively, that all I need to do is flip the surface to restore order to the universe.  Does it follow some winding order?  Any help appreciated.

lana

@jon_loschke
Please see how I "fixed" it here https://cad.onshape.com/documents/60ceb2bbb891a5c11dedfb6a/w/6335aad1855d049bc742694f/e/adc9f52a8d32e1801f0aacdd
With thicken and offset surface.

jon_loschke

Here is an example:  https://cad.onshape.com/documents/f327609b4d06263059d1f054/w/34bd5eb32b90788204263054/e/a616324ac5a4964a55e156f7

I created 'normal' first.  Then I duplicated the studio and *only* changed the sketch from a circle to an octagon.  Note that the two parts are now reversed.

konstantin_shiriazdanov

 It is not rather strange that split can appoint different body id's depending on the splitting contour shape. Use some boolean operations which create only one part per operation, and define baseline bodies as early as possible to avoid such effects. That are the rules which would allow part to stay themselves, I think.

lana

@jon_loschke
Please see how I "fixed" it here https://cad.onshape.com/documents/60ceb2bbb891a5c11dedfb6a/w/6335aad1855d049bc742694f/e/adc9f52a8d32e1801f0aacdd
With thicken and offset surface.

jon_loschke

lana said:

@jon_loschke
Please see how I "fixed" it here https://cad.onshape.com/documents/60ceb2bbb891a5c11dedfb6a/w/6335aad1855d049bc742694f/e/adc9f52a8d32e1801f0aacdd
With thicken and offset surface.

Clever.  This appears to flip the normal.  It's a bit of a hack, but I can work with it.   Thanks!

daniel_centore704

I've created a feature to fix this problem: https://forum.onshape.com/discussion/23021/new-feature-split-with-flip/