Re: Er, um this is odd? KM paint peeling...
it not that its surprising that pain comes off the vases it is surprising that it sticks on, glass does not take to having things stuck to it very easily and since the vases are not sanded before they are painted it leads to flaking. yes you can make it so it is pretty sturdy but it will not withstand anywhere near as much as the glass it self
IMHO glass should not be painted, it should be colored through using colored glass and developing pattern that way