How do you transfer bluing to say a lathe bed or milling machine table if they are too big for your surface plate?
Can you use a smaller surface plate and taken them to the work?
Also I see people building the surface back up to height with Turcite or similar. Why is that needed? Surely a few thou height difference won't be such a problem? Especially on a mill.
And where does scraping score over lapping?
Never done any scraping but ground a few telescope mirrors so similar in principle. Especially lapping.
Can you use a smaller surface plate and taken them to the work?
Also I see people building the surface back up to height with Turcite or similar. Why is that needed? Surely a few thou height difference won't be such a problem? Especially on a mill.
And where does scraping score over lapping?
Never done any scraping but ground a few telescope mirrors so similar in principle. Especially lapping.