Featured Jobs - Gravity Blender Gravity Blender was custom manufactured per customer's specifications. This project was engineered by our staff and produced in our manufacturing facility. After completion the Gravity Blender was installed and is functioning to this day, providing the required results for the customer.If your company has a special or custom project, let M & M Sheet Metal assist you with the result. Our knowledgeable staff is here to assist you in any way we can.