Twenty five years ago when I was throughly involved in machine tool rebuilds scrapping was considered the only valid way to fit a machine together. Though I see mention of lapping ways all over the internet, it is not something I care to suggest. The reality is the more you do it the more the surface deviates from an ideal plane.
The only time a stone gets near a set of ways being reworked is right after a scrapping session. That is only to remove burrs or high spots.
So I'm with ES take the time to scrap the surfaces in correctly if needed.
Thanks
dave
Originally Posted by ESjaavik That's why I'm scraping instead of lapping them. The small pockets you get when scraping are acts as oil reservoirs. |