In the design approach modelling top-down assembly, one or more features section is defined by something in assembly. Example: sketch layout or other geometry parts. The intention of the model design, for example: feature size, location of components in assembly, etc.

Some of the advantages of the top-down modeling approach are that the design details of all components are not needed and fewer reworking is needed when design changes are needed. This model requires individual relationships between components. The parts know how to update themselves based on the way you make it. You can get Solidworks modeling services from https://acscadservices.com/mechanical-cad/solidworks-3d-modeling-services/.

Designers usually use a top-down assembly modeling approach to put their assemblies and to capture the main design aspects of certain special parts in assemblies. There are three main methods for use for top-down assembly modeling approaches:

Individual features: The individual feature method provides the ability to refer various components and sub-components in existing assembly. Example – Make structural braces in the box using the extruded boss / base feature tool.

All assembly methods: The entire assembly method provides the ability to make assembly from the layout sketch. Sketch layout defines the location of components, main dimensions, etc. The main advantage of designing the assembly using the sketch layout is that if you modify the sketch of the layout, assembly and its related parts automatically updated all the assembly methods are useful when you make changes quickly, and in one location.

Complete component method: The complete part method provides the ability to build your model by creating new components in the context of assembly. The components you build are actually mated to other components in the assembly. The geometry for the components you make is based on existing components.

This method is useful for parts such as brackets and equipment, which are mostly or completely dependent on other parts to determine the shape and size.