Digital information to be associated with a component can be generated and used to alter a digital model of the component. A line of sight to at least a portion of a marking device and the component can be detected, and at least one of an orientation or a position of an endpoint of the marking device relative to the component can be determined using the line of sight. Digital information indicative of the at least one of the orientation or the position of the endpoint relative to the component can be generated responsive to the endpoint of the marking device contacting the component. The digital information can be used to alter a digital model based on defects of the component corresponding to portions contacted by the endpoint of the marking device.