Activity-based process modeling languages, such as Business Process Model and Notation (BPMN), face challenges in accurately representing manufacturing processes, limiting their effectiveness for simulation purposes. In contrast, specialized manufacturing process simulation tools typically adopt a resource-based approach which, while effective in certain aspects, often lacks robust process modeling capabilities and requires custom coding to define detailed system behaviors. Although prior research has explored extending BPMN to better support manufacturing scenarios, there is still a lack of tools that integrate both activity-centric and resource-centric approaches for comprehensive modeling and simulation. In this work, we address this gap by proposing a novel metamodel that extends BPMN with enhanced resource capabilities. We present a process modeler that allows users to design manufacturing processes and a corresponding simulator that uses these models to generate insightful information about the process performance through simulation. The solution proposed is then validated using both made-up and real-world manufacturing scenarios.