|Message: Re: Volumes of G4Tubs smaller? & Boolean operation between to 'ring's not working?||Not Logged In (login)|
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1) As you will have understood from the other messages on this thread, this is a visualisation problem only - geometrical tracking is not affected. For visualisation it is necessary to construct a polyhedron, which is fraught with well-known numerical problems - that is what the error message is about.
2) The problem you are seeing most likely comes from an attempt to subtract a volume that shares a surface with the subtractee. This is also mentioned in the other messages on this thread. Make sure your subtracting tubes are longer than the subtractees. If there is still a problem, try a small (physicallly insignificant) change of radius.
3) Why not try the union of 3 hollow tubes (G4Tubs'es with an inner radius)?
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