surface cut
surface cut
(OP)
Alright so I am trying to recreate a naca inlet on a curved surface. The inlet surface has been created underneath the surface using a surface loft, but I have not been able to remove the intersecting surface to make the inlet scoop open. I have tried a surface trim using the lofted surface to trim the objects surface, but the surface above the inlet will not be removed. I have also tried to do a surface cut using the loft but for whatever reason I am unable to select the lofted body. Please help.






RE: surface cut
RE: surface cut
Can you project Split Lines onto the surface, and then Delete Face?
RE: surface cut
RE: surface cut
RE: surface cut
If so, what made you think that it had worked initially?
If not, what makes you think the surface is still there?
Just thoughts that come to mind, maybe all too obvious -
Did you accidentally turn on "delete and patch" ?
could you use "extend surface" on the original trimming surface to make sure the surface intersect completely and use the trim tool? (As CBL asked: Does the "cutting" surface fully extend beyond the surface to be cut?)
Do you have any unintentional seams or gaps across the face you are trying to split / trim away that could be leaving sliver faces that are hard to see?
RE: surface cut
RE: surface cut
This sounds pretty generic.
Certainly you can create a simple example that exhibits all the behavior of your proprietary work and attach the file here?
Delete Face does not sound like the best way to me.
Make sure the surface fully cuts the solid (might have to extend).
Several other ways as well.
If you can't post an example then I'm sure someone else will do the work and attach one here, but that often turns into a game of 20 questions if the first solution doesn't match your particular situation.
RE: surface cut
RE: surface cut
RE: surface cut
RE: surface cut
RE: surface cut
If the original file was done the same way, it wouldn't trim cleanly since the "duct" surface does not pass completely through the surface it needs to trim.
I would think that a projected split line and delete face would work (seems to have worked OK in this case) even if it is not the most elegant solution.
If I were in your position, I guess I would rule out a modeling issue by trying to trim the surface by modifying the bounds of the 2nd loft to be "above" the target surface, rather than using projected curves. Then close off the front of the duct with a planar surface and knit it to your second loft. You would end up with something similar to the picture I attached, and if there are no gaps the trim should work fine.
If that didnt work, or if you end up with a ghosted surface again I'd start looking for systemic causes (Graphics card driver, yada yada). Have you tried opening the file on another machine to see if offending surface still appears?
RE: surface cut
Sounds suspiciously like a rendering issue.
RE: surface cut
Open the part and inspect whether the face is deleted or not.
- Try selecting the deleted face ... are the internal faces selected?
- Try thickening the part ... see if there are edges.
- Try creating a section opposite the deleted face ... see if there is an opening.
RE: surface cut
And often it is best to model the surfaces to a larger boundary rather than to try to model to an exact intersection boundary and then trim back to get the best intersection. I would expect to see problems modeling as you have done.