Use this dialog to specify the options for flattening an unflattened last.


  1. Select one of the following as the Last type:
    • Normal.
    • Boot.
  2. Use the slider to specify the Average piece thickness.The corresponding value is displayed. Alternatively, enter a value; the slider is adjusted to reflect the value you entered.

Flattening is created by offsetting the surface of the side of the last by this margin.

  1. In the Flatten section, select one of the following:
    • Each half separately
    • Merge two halves at toe

Each half separately places the inner and outer halves separately, using the selected symmetry option. Select Rotate halves and Make both halves same as as appropriate.

  • Rotate halves to maintain heel height places the outer/inner last halves separately by maintaining heel height
  • Make both halves same as controls the shape of the two halves of the flattening. Specify the control by selecting one of the following:

Inside uses-flattening of the side surface for both sides.

Outside uses outside flattening of the side surface for both sides.

Average uses an average of both sides.

Merge two halves at toe merges the two sides at the toe. This will make the centre-line straight between the vamp point and the toe point, merging the two halves at a common toe point.


  1. Specify the direction the toe is pointing after flattening using Position toe to:

Right positions the toe so that it is pointing towards the right after flattening.

Left positions the toe so that it is pointing towards the left after flattening.

  1. Position inner shell lets you specify the position of the inner shell after flattening:

Above positions the inner shell above the centre-line after flattening.

Below positions the inner shell below the centre-line after flattening.

  1. Select the required Parameter file from the list.kp18

The parameter files contains the parameters to be used to create flattening. If no selection is made, flattening is controlled by the parameters that are stored in the Default parameter file that is stored in:


It is possible to change these parameters, but making a change will affect the flattening process for every last you create.

  1. Click OK to save the changes and flatten the last.

When you flatten an offset concept last, the flattening that is displayed will be of the confirmed size that is useful for pattern engineering.

When you sketch lines in 3D on the offset last, they will be automatically mapped to the confirmed last and flattened accordingly.

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