STL Export is not including all features

[Anonymous]

I have been attempting to export the following part as an stl, but the stl does not have all of the features in the part. The stl is missing the connectors in between the circles.

[TheCADWhisperer]

Are there any unresolved issues indicated in your feature browser?  (i in circle)

[johnsonshiue]

Hi! The combined body seems to have some problems. The operation did not fully succeed. For printing purpose, the Combine may not be necessary. You may delete it and the whole part can be exported to stl without missing geometry.

Many thanks!