The invention relates to a method and a device for removing auxiliary material of 3D-printed workpieces (1), in particular for removing support material which is soluble in a dissolving liquid (3), comprising a container (2) which is at least partially filled with a dissolving liquid (3) for removing the auxiliary material, the dissolving liquid (3) being suitable for and/or configured to dissolve the auxiliary material, and comprising at least one holding device (4) for fastening a workpiece (1), wherein a movement device (5) is provided, which moves the holding device (4) and in particular the workpiece (1) fastened to the holding device (4) through the dissolving liquid (3) for removing the auxiliary material.