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### Constructing a Best Fit or Best Fit Recompensate Slot

The Best Fit (BF) and the Best Fit Recompensate (BFRE) are constructed from 4 or more features. The constructed slots vector is normal (perpendicular) to the working plane. The BFRE construction uses the ball center combined with the probe radius to compute the slot. The compensation is an integral part of the fitting. The BF construction compensates the measured points prior to fitting.

The height of the slot from the workplane is the average of all the input features.

To construct a BF or BFRE Slot:

1. Access the Construct Slot dialog box (Insert | Feature | Constructed | Slot).

2. Select In or Out.

3. Select the BF or BFRE option.

4. Select at least 4 features. They can be any feature type.

5. Click the Create button.

The Edit window command line for the Best Fit or Best Fit Recompensate Slot would read:

CONSTR/SLOT,BF (or BFRE),feat_1,feat_2, …