Hand scraping is a manual process used to correct surface deviations on machine ways (the linear guides that moving parts slide along). While grinding and milling can make a surface flat, they cannot create a surface that carries oil efficiently or perfectly matches its mating counterpart.
Machine Tool Reconditioning and Applications of Hand Scraping Hand scraping is a manual process used to
Once you locate the PDF (which is often quite large, usually over 300 pages), you should focus on these key chapters if you are a beginner: usually over 300 pages)