CUSTOM PATTERN MAKER - Chapter VII - pg 40
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  2.  USE OFFSET TO MAKE SEAM ALLOWANCES.

2.1.  You may want to first ZOOM in on the pattern piece so it is easier to see the details.  SELECT ZOOM WINDOW from the VIEW pop-down menu, make a WINDOW that just fits around the pattern or use ZOOM2.5X (CLICK on the center of the pattern piece).

NOTE:  Many pattern makers make their patterns with wider seam allowances on the straight seams and narrower ones on the curved seams.  (For example: 1" side, center and shoulder seams and 1/2" neckline and armhole seams.)  If you want to have different size seam allowances at places on the pattern, repeat the OFFSET process for each width.
    In order to achieve this multiple widths of seam allowances, you will first have to make complete seam allowances around the pattern piece at each of the widths you want to have.  Then you will have to TRIM (this command is also on the MODIFY MENU) away the parts of the seam allowances that you don't want.  This process is easier than one might think since the OFFSET command makes seam allowances very quickly and easily.  After you have created the seam allowance lines, all you need to do is draw (PLINE) lines between the uneven widths at the places where you want to transition from one width to the other.  The TRIM command allows you to make the transition lines you drew into "CUTTING EDGE" boundary lines and then TRIM away the unwanted seam allowance lines between the boundary lines.


2.2.  Begin by SELECTing OFFSET from the MODIFY pop-down menu.  The computer say:
Offset distance or Through <Through>:

2.2.1.  TYPE the number that you want the seam allowance width to be and ENTER.  (Example: 1/2 or .5)  The computer will now say:
            Select object to offset:

2.2.2.  Use the cursor device to SELECT with the PICK BOX to the outline of the