3 ms·
What do you mean by 'hand scraping'? You know, I've never really thought about it, but I would think that grinding two same-material surfaces together with an
by carre12345 5y ago
What do you mean by 'hand scraping'?
You know, I've never really thought about it, but I would think that grinding two same-material surfaces together with an abrasive compound would result in flatness if the pressure is even.
- q3k 5y ago(Hand) scraping refers to https://www.youtube.com/watch?v=REeGn4hN1Bg https://www.youtube.com/watch?v=REeGn4hN1Bg . With two surfaces you can still have some bias (convexity/concavity) even though they appear to be relatively flat, you need three surfaces for absolute flatness. See the Whithworth Method described earlier in this topic. If you're interested in this sort of stuff and want a video introduction, see: https://www.youtube.com/watch?v=gNRnrn5DE58 https://www.youtube.com/watch?v=gNRnrn5DE58