Hi, I`m junior, make a box for consumer electronics. The Help says " Draft Analysis PropertyManager" that it can be corrected using --> Displays faces that contain both positive and negative draft. Typically, you can eliminate a straddle face by creating a split line. Split line is already there 
,
but the problem remains!
Сan not understand how to fix "straddle face"?
Andy did you tried to re-run the draft analysis to check if the straddle face went off?
Also can you attach the part to check the issue?
After clicking reply, click on use advanced editor (top right corner of reply box) and then you can see the option to attach in bottom right corner.
Hi Deepak Gupta,
What do you mean " to check if the straddle face went off?"? I`m junior and I have little experience. I attached the main file () of which made the top and bottom. Is the final stage, now I have to make a mold. But I can not do "Parting Line", because I have "Straddle Face".
To remove the straddle faces, you'll have to split them plus add more draft (positive/negative) to them.The other areas I would worry for are the one in yellow and undercuts.
In draft analysis if I use angle more than 3° then outer straddle faces are removed. But the ones on the undercut are still there and needs to be fixed.
1. Do you mean that i can change the angle of 5°. in " Draft Analysis" and then make a "Parting Line" and it will be fine for the mold form? If this is true it will save me (today I have to finish it).
2. If I leave a thin line in 1mm (less 1° ), this will be a problem for the ejection of the plastic mold forms? I cant change it, it makes no automatically, when I make "lip&Groove" in the main file and then the top half of this heritage.
Andy Mark wrote:
1. Do you mean that i can change the angle of 5°. in " Draft Analysis" and then make a "Parting Line" and it will be fine for the mold form? If this is true it will save me (today I have to finish it).
I doesn't mean that changing angle for draft analysis will fix the problem. You'll have to get those faces fixed.
Attach is the main file which had the issues. You'll have to ask the person who had sent you main file to either fix the issue OR you would have to fix them.
This is all my work. I do not know that there must be corrected. I just do not understand why, after the split line, the problem remains. Even if i Delete these faces and then use "Filled Surface". Maybe because I used the plugin "Power Surfacing" for main file? I'm trying to follow the instructions (built-in SW Tutorials) SOLIDWORKS Tutorials: Advanced Techniques --> Mold Design --> telephone.sldprt. Well I know that the model has an angle of greater than 1 degree, and it will come out of the mold. What do you think what can be changed in the main file for the solution to this problem?
Andy,
I tested PowerSurfacing recently, but my trial has expired, so I can't see how you generated it.
Can you attach the subd mesh file? (the OBJ file that is the base for your shape)
I'm thinking you have some faces/edges in your subd mesh that are preventing the parting line from falling where you want (or expect) it to be.
Hi Chris Dordoni,
but unfortunately SW15 can not be saved in obj format (are you sure that this is possible in SW?). I can save this in STL format, to check?
There is an option in PowerSurfacing to Export Subd Mesh as an OBJ (or FBX).
Thanks for the tip!
Andy
It looks like the subd mesh is the issue, the facets are not parallel to the parting line that you want.
I drew a red line on these images for reference. Though you may want the actual parting line higher or lower, its still the same issue, the true parting line (which you can check for yourself using the parting line feature) is not on a plane.
Did you start from a primitive (like a box or sphere) in PowerSurfacing, or did you create the subd mesh in another application?
Well, today I added to the model (subd mesh) one perpendicular line
(within the editor "Power Surfacing" ), it helped a little and
when I added a second line this solved the problem!
Chris I think you were right and led me to the right solution.
But in this case, changing the geometry of the model and not very fit for me.
"Did you start from a primitive (like a box or sphere) in Power Surfacing, or did you create the subd mesh in another application?" - That's a good question! I did it out of primitive boxing, but I do not remember where I did in SolidWorks or Power Surfacing.
Andy,
I think the geometry is changed because now there is a flat area that runs around your enclosure, so the shape is not as "soft" as the previous. The parting line runs through the flat area, so you eliminated that problem at the expense of the shape. You probably need to add draft at the parting line as well, if you use the new shape.
I think splitting the faces like in the following pic might let you get the shape you want, and be able to generate the parting line on a plane.
Chris,
Well, yes, now I have to fix all the errors that were formed after the change of geometry. But now we know how to fix these problems. Thanks to all who participated.
Maybe you're right, mistakes can start from the beginning! This is a screenshot immediately after "Power Surfacing" 
You need to fix this in Power surfacing itself. Though Power surfacing is a great tool but looking at the model, I fell this could be easily done in SOLIDWORKS itself.
If leave everything as it is, will be a problem with ejection the model from the mold?
As Chris mentioned, please work on these area in the Power Surfacing so that you can get rid of the straddle faces. Then add drafts on the yellow faces.
Andy
It looks like the subd mesh is the issue, the facets are not parallel to the parting line that you want.
I drew a red line on these images for reference. Though you may want the actual parting line higher or lower, its still the same issue, the true parting line (which you can check for yourself using the parting line feature) is not on a plane.
Did you start from a primitive (like a box or sphere) in PowerSurfacing, or did you create the subd mesh in another application?