Faces missing/merged on small details after cutting model (various ways). 2nd issue w/ applying appearance to faces.

[amagicmerlin]

For giggles I've made a model of a speedometer face.  To avoid the pesky no-emboss on double curved surfaces issue, I simply extruded my features (numbers/ticks) directly into the face of the speedo dish.  This also avoids creating a bazillion little bodies.  I then cut those towers down to very near the surface with an offset sketch profile used either revolved as a cut, or as a new body that then was used as a tool to cut.  I also tried creating an offset face-splitting tool (surface) as well, but it errored any which way I tried to create a split tool.

The problem if two-fold and I wonder if one represents a bug.   

1. Faces end up missing on parts of some of the numbers (not always the same depending on how high above the surface I cut the towers away.)

And


2. (Fixed in the uploaded version) if I cut TOO close to the surface - like 0.1mm to 0.28mm or so, I can't seem to select all of my tick and numeral faces to color (yellow).  The current offset is like at 0.32mm (a little higher for lettering than I'd like - but I was able to add yellow paint appearance to faces then.)


There are a few tiny errors in the the timeline items as it's an export from a larger project, but I exported it to improve speed of processing as I worked on this one component. 

This is all probably good enough for hobby work, but it still bugs me...  maybe its a bug?

~Paul K.

[jeff_strater · Accepted solution]

This is a faceting issue.  The geometry is OK, but the graphics is messed up.  Thanks for sharing the model - we are always looking for examples to help us fix these.

There are ways to work around this, if you are interested.  Display Detail control can sometimes help, and if that doesn't work, you can split the faces.  You can see in the screencast that the detail control fixes the 4, but not the 1 and the 6 in 160, so I just split those faces.

[amagicmerlin]

Thanks for looking at my model.  I'll have to admit, I hadn't thought about trying to split the face (I tried body splitting but..).. and I had created that offset surface object to use as a splitting too, but I guess Fusion also doesn't like a double-curve to create a split tool.

Your suggestions worked great.   Is the change in "Detail Control" a per-body thing?  i.e. only affects processing (power) on that body?

Also any idea why I had trouble trying to select and apply appearances to the number and some tick faces when they were very close to the surface? I just couldnt' select them.  And when I did I couldn't drop a color on them.    Hard to explain.   Now when I lower the cut height the coloring of the faces remains as they've been colored at a higher height  (another work around it seems).

Thanks!

Happy to share the model if it helps fix such little bugs.

~Paul