Felix's team, ‘the masterchef of Ukrainian bombs’, work on the whole process of making and restoring explosives. Camouflaged among children's drawings, one of the members of the brigade, with engineering skills, draws and 3D prints on pipe tubes the casings that will later be filled with explosives by Felix's and other members' hands. It costs no more than 56 grivnas, the equivalent of €1.18, to produce 1 shell printed on a pipe tube.