Over the last three days, from Monday to Wednesday, 9 – 11 May, a multi-day programme ran within the STEMerica project. All three days revolved around the 3D world – on the first day everyone learned 3D modelling using Tinkercad, on the second they prepared the modelled objects for 3D printing in the slicing program Cura, while on the third day they used the printed object to make moulds into which they poured chocolate and made their own chocolate bars. The project was co-financed by the European Union from the European Social Fund. The project was co-financed by the Office for Cooperation with NGOs of the Government of the Republic of Croatia. The content of this post is the sole responsibility of the FabLab association.