Subd how to repair an imperfection

David_L_Aery · March 13, 2023, 1:24pm

i created this in subd, export as step, import into Alibre and when i try to do a boolean subtract, it fails. then when i inspect the part i get this error

the place i need to repair is here:

what would you suggest?
webtest.3dm (1.3 MB)

i also tried converting to a nurbs, export and still same result, boolean subtract fails.

martinsiegrist · March 13, 2023, 1:35pm

The imperfections are caused by some extra control points. I deleted them and changed the topology.

webtest.3dm (1.1 MB)

David_L_Aery · March 13, 2023, 2:00pm

thanks, i tried deleting points, guess never the right ones,
Thanks!

martinsiegrist · March 13, 2023, 2:02pm

Stitch can be useful in this case too to merge two vertices…

David_L_Aery · March 13, 2023, 2:42pm

thanks, i had better luck with the deleting the points. i tried the stitch on a couple of points and imported into Alibre, no errors but still would not boolean subtract. the other works great for me. i didn’t spend a lot of time on the stitch.