This is part of the series of 30 exercises developed during the E3D+VET program. The aim of this Erasmus+ program is the immersion in 3D printing of VET centres (website: ). On a plate of four parts each 14 cm x 14 cm (height 1cm), which are to be connected to each other, the palisades of the goseck circle are plugged (s. Illustration 1.2.2). The palisades should have a thickness of 0.5 cm and a height of 7 cm, curvature and length are shown in illustration 1.2.2.. Between the two palisade rings the distance is 4 cm. Into the inner-palisade-circle the model of the Nebra sky disk has to be placed (no plug connection). The Nebra sky disc should have a diameter of 14 cm.