Roborock S6 Mop Lid / Vent

Had issues with the mop staying wet during mopping and determined it was a venting issue. Initially modified the stock lid but made the hole too large and the tank emptied well before the floors were finished. This model has a small (1mm hole) and seems to be about right for my mop and floors but this could be changed to match the performance your looking for. 

Print in TPU to allow for flexing and to make a good seal similar to the stock part.