- Once melted, transfer the plastic into the mold. Apply pressure evenly and let it cool for 10–15 minutes to harden. + * **2.1 Drill drainage holes**: Create at least 5 holes on each side of the tray at the deepest edges to ensure complete water drainage. The modified tray should now resemble a washbasin and sit properly on the top tray of the frame. + * **2.2 Drill pivot holes**: Locate the center of the plastic tray and drill holes slightly offset from center (to avoid the plastic bumper in the exact center). Ensure the offset is on the same side on both sides. Drill matching your screw diameter. + * **2.4 Fix the nuts**: + * Screw nuts onto bolts inside the washbasin holes + * Apply hot glue around each nut to lock in position + * Once glue dries, remove screws—nuts stay permanently fixed + + **Result**: Washbasin ready for installation with glued-in-place nuts.