Which Synchronous Modeling command removes faces from a machining solid?

The capability to remove faces from a machining solid is specifically fulfilled by the command to delete a face. This command allows you to select a specific face of the solid model and remove it while ensuring that the integrity of the surrounding geometry is maintained. By using the delete functionality, users can streamline the model by eliminating features that are unnecessary or that need alteration for further design iterations.

Choosing this command is particularly useful in Synchronous Modeling as it supports efficient modifications to parts and can often lead to easier subsequent operations, such as regeneration and refinement of the geometry. Other commands listed focus on different functionalities, such as simplifying or offsetting faces, which do not achieve the specific goal of face removal as effectively as the delete face command does.