Total error result

The Total error (TE) is the error associated with using a shrinkage allowance.

The total error represents the predictive error plus the error due to the variation in shrinkage across the part.

Using this result

The plot allows you to compare the desired part tolerances with the total error associated with the calculated shrinkage prediction. That is the total error, (represented by the sum of the predictive error and the error associated with the variation in shrinkage across the part) is converted to a distance and compared with the desired tolerance.

If all tolerances are met in the total error graph and all dimensions lie within green areas on the Shrinkage check plot result, you can confidently use the recommended shrinkage allowance to cut the mold. The required mold dimensions and the tolerance that must be met are presented in the Dimension Summary Report table of the Shrink analysis log.

Things to look for

If some critical dimensions are not within tolerance, check the Full Dimension Summary Report table to determine whether tolerances cannot be met when using single value shrinkages for component directions.