Complex modelling; welding, and creating one mesh 

Learn how to weld your individual model components together to create one single mesh. In this case,  your bottles base shape, and your handle. Creating one mesh will allow you to add an interior wall and liquid to your finished model. Once you have completed welding your model, follow our tutorial “Ray Tracing Part 1 Interior Fill” to learn how to add an interior wall and liquid to your newly created model.