S
Spud
internal curve cuts are trickier than external curve cuts, I normally take the bulk of the cut with a grinder then do multiple straight cuts into the curve, these i nip out and then finish with a polisher to achieve a nice even curve ,They look exactly like gulf stone. If so, straight cuts are extremely easy with a wet cutter, but as Brian C says, difficult to cut internal curves. I tested with marker pen and left no mark so haven't sealed when fitting them and no complaints.........