[gate-users] "cone"

[鄭 玟晏]

I can't use the geometry command "cone".
Several times I wanted to build an cone with air( no material inside) , it didn't go as I thought.
 
O setRmin1 
O setRmax1
X setRmin2  (no works)
O setRmax2
 
One side of the cone is always FULL.
How could I do to handle this problam? 

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