How can you determine if you should continue polishing during bore cleaning?

Determining whether to continue polishing during bore cleaning is fundamentally linked to the ease of copper removal. If the copper fouling is coming out readily and efficiently, it's a good indication that the cleaning process is effective, and further polishing may not be necessary. On the other hand, if you encounter significant resistance or difficulty in removing copper fouling, this might suggest that more thorough cleaning or polishing is required to ensure that the bore is entirely clean.

While other factors such as the darkness of copper fouling or the duration of the cleaning session can provide some context for the cleaning process, they do not directly influence the decision of whether to continue polishing. In terms of accuracy, while this can be an important consideration overall, it is not a direct measure of the effectiveness of the cleaning process in real-time. Focusing on the ease of copper removal provides a clear and actionable benchmark for your cleaning efforts.