CUSTOM PATTERN MAKER - Chapter IX - pg 83
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  CHAPTER IX

CHANGING FINISHED PATTERN SIZES

    There are several AutoCAD commands that will aid you in changing the sizes of finished patterns.  These commands allow you to change patterns that you have created using C.P.M. or to change patterns that you have digitized into the program.  A separate CHANGE SIZE menu, found under the MAIN SEW MENU, has been created to facillitate the task.
C.P.M., at this time, does not have any special commands that will automatically change all of the pattern at once.  You will need to perform the changes step by step, much as manual grading is done, but you will discover that some of the steps are quite simple.  You may discover that you will choose to use a combination of command methods in the process of resizing according to what is faster in each specific case.
If you are planning to resize pattern pieces save a version of the pattern in a separate file before you add seam allowances and markings.  
C.P.M. has a RESIZE menu which is accessed from the MAIN SEW MENU that puts the commands you will use the most together in an easy access place.  The commands you will use the most will be STRETCH and OFFSET.

1. The STRETCH command allows you to "drag" the lines of the pattern to be bigger.  The sub-command CROSSING allows you to choose a section of the pattern at a time to be STRETCHed.  The CROSSING sub-command appears to work the same as the WINDOW sub-command when you start to use it.  The difference is that the computer will only SELECT the lines (entities) that the outline lines of the "window" cross.

1.1.  A good example of using the STRETCH command would be to make a skirt waist wider while the hips stay the same..  Begin with the pattern completely free of markings, other than matching notches.

1.2.  SELECTing STRETCH from the RESIZE menu takes you to the STRETCH sub-menu.  SELECT CROSSING and make a W(INDOW) that crosses the waist line about 1/2 way across and crosses the side seam a the hip line.  The computer will say:
        Base point:

1.3.  SELECT the INTERSection of the side seam and the waist and drag to the desired width.

1.3.1.  If you turn SNAP and ORTHO on before you start to move the point, it will move exactly horizontally in fixed "jumps".  If you have set the SNAP increments at the correct size you will be able to add exactly the right amount.

1.4.1.  You will discover that you do not have to place your base point exactly at the intersection.  You can place it at the nearest grid point and, as long as you move horizontally with ORTHO the correct number of increments, it will stretch correctly.


2.  OFFSET will work fairly well if you want to grade a pattern by fixed increments