Binder jettingBinder jetting (BJ) is witnessing accelerated use in several strategic applications like automotiveAutomotive, aerospace, sand cores and molds for foundries. However, thermal management during printing remains a challenging issue that requires dedicated numerical and experimental efforts. This study aims to develop a simplified approach to model the boundary conditionsBoundary condition required for the thermal simulationThermal simulation of BJ printing. The heat exchange between the heated build box and the air of the chamber with the powder bed in a Colibrium Additive H2 metal BJ machine was modeled using convective heat transferHeat transfer. Seventeen thermocouples were used to measure the temperature at different locations within the powder bed during a heating cycle. Different arrangements of convection coefficients characterizing the interaction of the build box and the air of the chamber with the powder bed were evaluated through a parametric study. A convection coefficient of 7.5 W/(m2K) for the air in the chamber, 20 W/(m2K) for the box walls and 15 W/(m2K) for the base plate represented most realistically the thermal interaction. The average error between the results simulated and the thermocouple data was 5.7 °C. The largest error (13.2 °C) was recorded near the corners of the top surface, where the influence of the air and box walls is more pronounced, as these heat transfer mechanisms are highly sensitive to fluctuations in material propertiesProperties and ambient conditions.