If they did not; we would not have the entire art of scraping [0] Yes, if meticulously maintained and lightly used some can last a good while. In a less pristi

If they did not; we would not have the entire art of scraping [0] Yes, if meticulously maintained and lightly used some can last a good while. In a less pristine environment, say where deadlines need to get met, they wear out unevenly, for lathes, the ways near the headstock usually see more work than the tailstock end. So, the machine now cuts a taper when it is suppose to cut parallel. [0] https://duckduckgo.com/?t=lm&q=scraping+machine+tools&ia=web https://duckduckgo.com/?t=lm&q=scraping+machine+tools&ia=web