Manufacturing Engineering Co-op - Summer 2026

Rennscot MFG•Woburn, MA

About The Position

Ready to shape the future of manufacturing? As a Manufacturing Engineering Co-op at Rennscot MFG, you'll be at the forefront of additive manufacturing technology while building a comprehensive skill set across advanced manufacturing processes. This hands-on role puts you in the center of our additive manufacturing operations, where you'll work with cutting-edge 3D printing technologies, optimize build processes, and support post-processing workflows. You'll also gain valuable experience in CNC machining and CAM programming, giving you a complete understanding of how additive and subtractive processes work together to create exceptional products.

Requirements

Pursuing a Bachelor's degree in Mechanical, Manufacturing, Industrial Engineering, or related field
Interest in additive manufacturing technologies and processes
Familiarity with CAD software (Fusion 360, SolidWorks, or similar)
Understanding of CNC machining and subtractive manufacturing concepts
Exposure to CAM software (ESPRIT, hyperMILL, Fusion 360, or similar)
Strong attention to detail and eagerness to learn
Ability to work both independently and collaboratively

Nice To Haves

Experience with additive manufacturing systems (FDM, SLA, SLS, metal printing, etc.)
Knowledge of additive design principles and topology optimization
Operated CNC machines (mills or lathes), especially Heidenhain, Okuma, & Haas controllers
Understanding of G-code and machine setup
Can read and interpret engineering drawings with GD&T
Exposure to Lean Manufacturing or Six Sigma principles
Experience with additive post-processing techniques

Responsibilities

Plan, setup, and execute additive manufacturing builds using industrial 3D printing systems
Optimize build orientation, support structures, and process parameters for quality and efficiency
Post-process additively manufactured parts including support removal, heat treatment, and surface finishing
Troubleshoot build failures and drive continuous improvement in additive processes
Develop and refine manufacturing processes for new additive technologies and materials
Create, simulate, and verify CNC programs for 3-, 4-, and 5-axis milling and turning centers using hyperMILL, ESPRIT & Fusion 360
Design hybrid manufacturing workflows that combine additive and subtractive processes
Support machining operations for post-processing additive parts and traditional CNC production
Collaborate with machinists on setup, prove-out, and first-article validation
Design and fabricate workholding and fixturing for both additive and subtractive processes
Contribute to process development, refining toolpaths and cut strategies for improved quality
Participate in root cause analysis and corrective action for production issues
Document manufacturing processes, build parameters, and setup procedures for repeatability
Operate CNC machinery and additive systems to support prototype and production work
Perform setup, inspection, and basic troubleshooting across manufacturing equipment
Support continuous improvement projects focused on machine utilization and process capability
Cross-train with Quality and Assembly teams based on business needs