The round frame "Three Rings" (model 6124) STL model of an original round shape made of three dense rings with a different pattern and a continuous middle. The thematic selection of models in the STL format for decorative work and the creation of visual accents for decorating the interior. All models in STL format for ArtCAM, generation of code for MACH3, for NC Studio, 3D for CNC milling machines running with plastic and wood. The models are designed for use both on CNC for home use and on industrial CNC machines.