Scraping Pdf Link [portable] - Machine Tool Reconditioning And Applications Of Hand

Hand scraping is not used for every part of a machine; it is reserved for critical bearing surfaces where metal-to-metal contact occurs. 1. Lathe Bed Ways

Cast iron surface plates, used as the "base of truth" for all metrology, are often scraped to Grade A or AA specifications to provide a perfectly flat reference plane. 4. Spindle Bearings Hand scraping is not used for every part

The saddle and table interfaces on a bridge-port or CNC mill require scraping to ensure the X and Y axes remain perpendicular (square) to the spindle. 3. Surface Plates Hand scraping is not used for every part

Scrapers can mate two specific surfaces together for a 1:1 perfect fit. Hand scraping is not used for every part

Deciding whether to recondition a machine or buy a new one depends on several factors: