ChamferEdge creates gap that RemoveAllNakedMicroEdges can't fix

0.4 works but 0.5 does not:

And the result from the RemoveAllNakedMicroEdges command:

chamferfail.3dm (167.8 KB)

Hello - if you make sure all the curved surfaces are tangent before chamfering, it all works -

chamfersuccess.3dm (78.4 KB)

-Pascal