pat , drill on fastest setting . , drill from both sides so not to shell the glass when it breaks through.
put tape over the other side to stop the puck from falling if you have to drill down.
round out your hole by moving the drill around in circles as your drilling, that ways the bit doesnt wedge in the glass hole and the hole ends up just slightly bigger than your bit.
not much water is really needed if the glass is thin , its more for not wearing your diamond bit down , on glass 12mm and over water must be used as the glass gets hot and could split.
when first staring start on an angle like fishy fishy mentioned , then slowly lift your drill up straight , this way the bit doesnt throw you while you start and leave a mark in your panel or chip it.
gl
