Champion Cutting Tool Proline PTC-WFG water feed guide is used in conjuction with tile cutting on a Vertical wall. WFG creates a constant flow of water to the cutting area, with the reverse spiral drawing in the water from the PTC3 tile cutter. Move the switch to the left to determine water flow from the water basin. Position the PTC-3 tile cutter inside the v-groove of the WFG. Once the cut is complete shut off the flow of water.