Compact 3D printers are an attractive option for medium sized companies. They are able to produce in a very short time prototypes and models that are needed only in small quantities or even as individual pieces. Since no additional service provider is necessary, the acquisition costs are amortised under certain circumstances already with the first print. Electricians and modellers can also benefit from 3D printing in order to implement their own projects more quickly. The now high precision of the printer allows the production of complex models, such as a gearwheel. The required software is included or freely available. This has the advantage that now there are numerous free templates available on the Internet for the most popular models.