Why is face pattern failing?

bruce_williams

Circular Feature pattern works but Face pattern of 3 rib faces returns 'pattern could not be created on the same part'.  Linear Face pattern works.   I left the failing feature in the document here.

john_mcclary

Yes, @ethan_1 is correct, feature pattern is the correct usage here.

NeilCooke

Face pattern only works if each instance shares the same faces - in your case, the sides of the block are different.

mahir

Alternatively, you can choose to not merge your rib, use a part pattern, and then join the bodies with a boolean. OS seems to lead you away from using feature patterns since it's more costly to rebuild.

ethan_1

Not sure why its failing, but under the drop down where it says face pattern if you change that to a feature pattern and select Rib 1 it works.

john_mcclary

Yes, @ethan_1 is correct, feature pattern is the correct usage here.

bruce_williams

@ethan_1 & @john_mceleney

Thank you for your responses.  Feature certainly works.  

John or anyone - you seem more knowledgeable about the 'correct use'  What is the criteria for using Face vs Feature besides what works.. ?  Seems to me the geometry should work either way and I remember Face pattern is less 'costly' than Feature.  And again, Linear Face pattern works with the three rib faces...

NeilCooke

Face pattern only works if each instance shares the same faces - in your case, the sides of the block are different.

mahir

Alternatively, you can choose to not merge your rib, use a part pattern, and then join the bodies with a boolean. OS seems to lead you away from using feature patterns since it's more costly to rebuild.

bruce_williams

Boom!!  @NeilCooke - exactly what I wanted to know!

Extra credit @mahir  

Thanks!