This is purely theoretical question; just trying to learn new things / skills...
How does accuracy achieved by hand methods like scraping compare to hand Lapping techniques and how do those two compare to accuracy achieved by modern CNC machining?
I am considering to learn hand scraping and just trying to gauge the usefulness of this skill in terms of "metrology level accuracy".
The project I am considering is making a gauge block; i will be testing it with 50 millionth gauge (i realize its not a real "metrology grade" block comparator, but that is what i have at the moment) vs grade B gauge block set. What is the practical difference that I should expect to see between lapping and scraping for the final finish? I have a variety of lapping compounds, used to be into knife sharpening big time...
Other than in a low budget situation when there is no modern machining available for lapping / CNC machining; is there still a place in modern high dollar industry for hand scraping? I am thinking in terms of accuracy.
Thanks ahead. Throw all info you have at me, trying to learn from "the old folks" what modern day text books won't teach ya...
How does accuracy achieved by hand methods like scraping compare to hand Lapping techniques and how do those two compare to accuracy achieved by modern CNC machining?
I am considering to learn hand scraping and just trying to gauge the usefulness of this skill in terms of "metrology level accuracy".
The project I am considering is making a gauge block; i will be testing it with 50 millionth gauge (i realize its not a real "metrology grade" block comparator, but that is what i have at the moment) vs grade B gauge block set. What is the practical difference that I should expect to see between lapping and scraping for the final finish? I have a variety of lapping compounds, used to be into knife sharpening big time...
Other than in a low budget situation when there is no modern machining available for lapping / CNC machining; is there still a place in modern high dollar industry for hand scraping? I am thinking in terms of accuracy.
Thanks ahead. Throw all info you have at me, trying to learn from "the old folks" what modern day text books won't teach ya...