The style of the red wine glass might make it hard to get the settings right but I would think it still would work just fine.  I am using a stemless red wine glass so it has a narrow top and gets wider bowel shaped at the bottom.  I am using the RA2 with accessory kit however the accessory kit will not be affective since the angle would be in the wrong direction.  Its skinny at the top and wider at the bottom.  Does anybody have some advice with settings?  I am not doing anything to the glass either so I am not sure if I should prep it before hand or not.  I am using the P2 Machine with the following settings.  Power-10%, Speed 300, Lines per cm is 100.  Some of the image engraves at the widest point but towards the top were it is narrower it is like nothing happened to it.