Unit Design's automatic soldering machines have been an industry favorite for over 25 years. With our MDS soldering machine, printed circuit boards are automatically conveyed through the fluxing and soldering cycles by PLC-controlled stepper motors, raised and lowered by our patented cam system, and returned to the operator for unloading. The MDS Series is capable of both lead and lead-free soldering with rosin, water soluble or no-clean fluxes.