good video but, very little useful information. what is the grade of lapping abrasive used? you have to go from rough to fine abrasives one after other, when to shift? you cannot reuse the lapping plate, have to mention that. what is the output in surface roughness and flatness? how do you check it? you have to use an optical flat. and how to use that? how do you make the lapping plate? check 3 piece method for making flat lapping plates. where is this used, why is it important? indian education system sucks because we are not taught whats required in real life situations, teacher comes does some work and goes, that's it, while the germans and Americans are taught all these things and so are smarter than us.
