Hello, This is a 3d model of a honey comb briquette making machine. Honey comb briquettes are easy to make and dont require complex machinery, thou they do require a specific kind of stove that they fit in. These briquettes can be of various diameters depending on personal preferences. The file contains a 3d model assembly zip file, stl file and step file format. Hope you guys like it, please check out my channel for more details and also comment for inquiries. Thanks alot.