|Testing a substitute
Think it’s YOU when a home sewing pattern doesn’t give you the results you hoped for? Guess again. The unhappy results may not be your fault!
A recent home sewing blouse pattern currently on the market has a sleeve cap whose sewing line is 3/4 inch shorter than the armhole’s sewing line. This year I chose to use this blouse pattern in my school’s Grading &Sewing a Blouse and Jacket.
If you are using this pattern its sleeve cap’s sewing line needs to be increased at least 1 1/2 inches to provide the minimum amount of 3/8 inch of ease in the front and 3/8 inch of ease in the back sleeve cap; preferably an inch of ease through the cap. This allows enough ease for the cap to lie well over the top of arm, while not being so much ease that the ease causes a problem with sewing the cap into the armhole.
There are two options:
First option – If you have a blouse sleeve pattern that you have used in the past, substitute that sleeve for the sleeve in this pattern. Make sure that sleeve’s armhole sewing line is the same length as the new blouse pattern’s armhole length. This proved to be the best solution for the class, as shown in the pictures above and on the left and right. The sleeve pattern is from Simplicity 9210, unfortunately now out of stock.
I tested the pattern in a size 8, using the PGM professional Dress Form the company donated to my school as a part of their program to support fashion education and students.
The PGM Dress Form is an American Standard Size 8. Since the major home sewing patterns are all drafted to the American Standard grade rule sizing system, mixing patterns from any of the big four companies can be easily done.
Second option – If a satisfactory substitute blouse sleeve pattern is not available, lower the sleeve cap 1 1/2 inches at the sleeve cap’s underarm, as shown in the diagram below.
NEVER trust the notches in sleeve cap/armhole patterns. ALL sleeve cap/armhole notches need to be checked before a pattern is cut and sewn in the fashion fabric.
To make the procedure easier to understand, the sleeve in these diagrams has no seam allowances. Seam allowances have been marked on the front and back bodice. In the above diagram 1/8 inch ease is put into the sleeve cap between the underarm and the first notches. This is also done between the front underarm and its first notch. This step is VERY important. One-eighth ease is ALWAYS needed in the cap at the curve under the arm.
In this diagram one sees the results. After the cap has been walked, the ease is now adjusted in the cap. The dark notches are the corrected notches. When sewing the cap into the armhole, lay the cap down to the feed. Because the feed-dog takes the fabric a little faster under the machine, it will help ease the cap into the armhole.
Books used in the program are also available for sale. All procedures in the program and its books are as done in high-end industry.
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