Assurance Manufacturing Inc., Minneapolis, Minn., (assurancemfg.com ) says its quick-turn prototype service provides sheetmetal fabrications, chassis, enclosures, stampings, and assemblies in three to seven days. The service targets design engineers, project managers, and purchasing agents in the OEM market. When users deliver CAD files (SolidWorks, Pro-E, and Autocad formats), the company says it responds within 24 hours with quotes and delivery information. The company adds that prototyping can be accelerated compared to typical sheetmetal-fabrication environments because it creates all tooling in-house.