September 20, 2026

Despite being invented in the 1950s, wave soldering remains the workhorse for high-volume through-hole production in 2026. This practical guide covers machine types, process optimization, lead-free compliance, defect prevention, and Industry 4.0 integration—everything manufacturers need to maximize their wave soldering operations.

Modern electronics assemblies have gotten ridiculously dense, making traditional reflow ovens insufficient for many through-hole connections. Selective soldering has become essential for automotive, aerospace, and defense manufacturers needing precise control without thermal damage to nearby components. This guide ranks the top 10 machines from leading manufacturers like Nordson, SEHO, and ACE, with real-world insights to help you make a smart investment.