Patch
I am not sure why the patch does not work but I have found that in Fusion, if something doesn't work, try a different way. I selected the body and used the stitch command and moved the tolerance slider up until the edge of the hole turned green and hit OK. That closed the body up and made a solid and in the solid space I could delete the odd face on the inside.
@wmhazzard wrote:
... and moved the tolerance slider up until the edge of the hole turned green and hit OK.
That is a BAD idea as it distorts the surface and can lead to problems down the road. It is much better to find the source of the problem.
The default tolerance for stitching in Fusion 360 already is factor 10 higher than in other applications.
It is factor 100 higher than the default in Autodesk Alias.
If you can post the model with a timeline I can take a look at it and see where/why that loft goes sour.
That healing works also within a given tolerance I can do this in ZW3D as well. But in essence with such a large gap any healing will also modify the surface. There is no magic trick that will just "heal" a crappy loft.
If this is ht last thing beer you are starting to machine things then you might as well stitch it with increased tolerance, even though the cap is so large that it's got enough space to roll a tractor-trailer through it sideways.
Extending the surface did not work when IN tried it and generally, Fusion 360's implementation of surface extension is a pretty ugly hack leaves a lot to be desired 😉
In surfacing a .1 mm gap is generally considered a huge hole. In Autodesk Alias the default stitching tolerance is 0.001 mm.
When attempting to stitch this, Fusion 360 will show the maximum gap is is detecting:
So in essence the stitch tolerance needs to be bigger than the gap, so maybe .35mm. While this does not sound like much and perhaps for manufacturing purposes stitching might be OK, which is what I suggested im my last post.
Generally, as I've explained above already the default stitching tolerance in Fusion 360 is already very large. This was likely done so that people unexperienced in proper surfacing techniques can create some surfaces. The maximum gap here is more than three times this so it is prudent to find the root cause.
Comparing two bodies in Fusion 360 by overlaying them is really not the correct technique to evaluate surface quality as you are comparing two somewhat randomly tessellated geometries.
First you should check the curvature of the edges before and after stitching with the curvature comb inspection tool. The Zebra Stripe analysis and the curvature map can also provide valuable insight into quality of the surface. That's where Fusion 360's tools end.
In order to make sure these display at the highest quality you should also set the display detail control of the geometry in question from adaptive to fixed/high.
This model also exhibits another indication that the modeling techniques need improvement. Many of the curved edges are quite broken into short segments, which really should not be the case for this relatively simple geometry.
Here is a screenshot of what the analysis and heal tool in ZW3D report on this relatively simple object after it was stitched into a solid in Fusion 360. The default tolerance in ZW3D (and other applications) is 0.01mm.
