In the link above (assuming the drawing is correct), why is datum axis C not dimensioned off of datum axis B? Datum axis C is located off the edge, not hole to hole, why is that? Why bother having datum B in the FCF when defining datum C?
How are we defining that top hole? It is referencing Datum A, but I don't see how it is using Datum B or C, it is using the edge of the part again.
Thank you for any clarity.
I just removed the link you posted ... The linked website appears to have copied content from another website (competitor) and we don't allow this sort of activity on Engineers Edge - competitor or not...
The image, which is publically available has been posted to your thread.
why is datum axis C not dimensioned off of datum axis B? Datum axis C is located off the edge, not hole to hole, why is that?
Datum C is dimensioned off of Datum B.. The explanation at the bottom of the copied website image indicates all of the dimensions are Basic therefore the dimensions and tolerances are non-cumulative and the order is meaningless.
You simply add or subtract the dimension distances to determine the direct dimension distance from Datum B to C.
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