Estimate how many times more expensive it is to grind a steel part to a tolerance of ±0.0005 in versus turning it to a tolerance of ±0.003 in.
What will be an ideal response?
From Fig. 1-2, cost of grinding to ? 0.0005 in is 270%. Cost of turning to ? 0.003 in is 60%.
Relative cost of grinding vs. turning = 270/60 = 4.5 times Ans.
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