This section is from the "Home And School Sewing" book, by Frances Patton. Also available from Amazon: Home And School Sewing.
A placket is an opening or slit made in the upper part of a petticoat or skirt for convenience in putting it on.
A placket on a dress is frequently faced on the right-hand side with an extension hem attached to the left-hand side; the right-hand side should be lapped over at the bottom of the vent and stitched.
The vent in a lady's skirt should be ten inches long, but in a petticoat the length of the vent will depend upon the depth of the yoke or band.
Materials. - Materials required: The best material for this lesson is a skirt on which the placket is to be made; needles; cotton; scissors; tape measure.
1. Leave one of the seams of the skirt open the desired length, or
2. If the seam is not in proper place for the placket, cut a vent the proper length; cutting the vent with a thread of the muslin.
3. Turn the skirt wrong side out.
4. On the right-hand side of the vent, make a hem one-fourth of an inch wide, narrowing it to a point and rolling it at the bottom.
5. On the left-hand side, make a hem three-fourths of an inch wide, keeping it the same width all the way down.
ILL. 35 - The Placket.
6. Turn the skirt right side out; the wide hem is now on the right-hand side and the narrow one on the left.
7. Lap the three-fourths-of-an-inch hem over the narrow one on the left-hand side at the bottom of the vent, and secure it by two horizontal rows of stitching, about one-fourth of an inch apart. See Illustration No. 35.
 
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