Abstract: The invention includes an article and method for creating an erosion-resistant surface in a trough adapted to receive molten metal. The article includes a trough having a working lining and a pre-cast shape anchored at an erosion zone. The working lining and the precast shape define the interior volume of the trough. The precast shape can be anchored by, for example, mortar, undercuts, mechanical fasteners or, preferably, by combinations thereof. The method comprises casting a working lining within the trough and anchoring the precast shape at the erosion zone. The method includes installing a form in the trough, casting a working lining into the trough, and anchoring the erosion-resistant precast shape at the erosion zone. The form may be removable, and the precast shape may be at least a portion of the form. Conveniently, the form includes undercuts adapted to anchor the precast shape into the trough, and the precast shape includes mortar locks.