Low Force Friction Welders Explore MTI’s most popular Low Force friction welders for industry. Select a machine below for detailed information and specifications. Microwelder View Machine LF35-35 View Machine LF35-35 (Rotary Induction) View Machine Rotary Resistance View Machine Rotary Induction (OD Coil) View Machine Our Commitment Quality is at the core of our ingenuity MTI brings the highest possible degree of safety and quality, whether it’s a part we’re welding or a machine we’re building. We are equipped to produce parts for the most sensitive environments and exacting standards.