Mark T.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

• Hydraulics • Pneumatics • Machine Design • Medical Products • Diode Pumped Solid State & CO2 lasers • LCOS Micro-displays • Recreational Products • PC Based Data Acquisition • Plastic Injection Molding • Sheet Metal fabrication • Rapid Prototype Techniques • Metal Casting • Stamping • Vacuum and Pressure formed parts • Rotating Equipment • Motion Control • Electro/Mechanical packaging • Heat Transfer/Thermodynamic analysis • CNC Machining • Micro – Turbines • Aluminum & Plastic Extrusions • Floatation Bag Design • CO2 & pyrotechnic gas inflators • Opto – Mechanical Design • Vacuum Chambers