Make Your Own Shorts and Slacks Patterns

It is very important to take your measurements
accurately because those measurements will be used as the basis
for additional styles and variations.  You should be measured
standing in a natural position and the crotch taken while sitting in a
straight hard-back chair (not in a cushion type chair). 

1. WAIST: Tie a piece
of elastic around the narrowest part of your torso and measure the
waist at that spot.

2.  HIP:  The
hipline is normally 8" below the waist.  Measure loosely around
the thickest part and add 3/8" to the measurement.

3.  COULOTTE LENGTH: 
Measure from the waist to the desired length of the split skirt /
coulotte length.

4.  CROTCH: 
Measure the crotch sitting down.  Take the measurement on the
side from the waist to the chair, and add 1 1/4".

5.  SHORTS LENGTH: 
Place your arm along the side of your leg.  Measure from the
waist to the point on your leg that the middle finger touches. 
This is your basic shorts length, however the length will vary,
according to the style you're making.

How to draw the FRONT shorts pattern

STEP BY STEP INSTRUCTIONS are set up to be followed
in a manner similar to the "dot to dot" pictures - connect all the dots as instructed, and you'll have the completed shorts pattern.

Sample/practice measurements for this pattern are: 
Shorts length 20" - Hip 42" and crotch 10"

1. Draw a vertical line to
equal the desired length of the shorts plus 3" for the elastic casing, our example being 23".  Measuring from the top, make a
mark along the vertical line to equal the crotch measurement +3" (3"
is for the elastic casing), our example being 13".  Draw a horizontal line at the top of the vertical line to equal H/4 = 10
1/2".  Draw a second horizontal line at the lower crotch measurement point to equal H/4 = 10 1/2".  Complete the "box"
as shown.

2.  Beginning at the
lower right hand corner of the box, measure out 2", as shown. 
From the same lower corner, measure up 4".  Draw a diagonal line to connect the two marks just made.  Divide the diagonal line in half and measure in 3/4", and draw in the curving front crotch line, as shown.

3.  To complete the front
shorts pattern, draw a horizontal line from the bottom of the length line to equal H/4 + 2" (12 1/2").  Next connect the end of the
line just drawn to the outside edge of the crotch line previously drawn, which will complete the front shorts leg pattern.

How to draw the BACK shorts pattern

1.  Draw around the front
shorts pattern, as shown with dashed lines.

2.  Beginning at the outside
edge of the waistline, measure in 3/4" and up 1/2". 
Draw a straight line connecting the in 3/4" and up 1/2" marks to the crotch line curve that's on the front pattern.

3.  At the outside edge of
the crotch curve, measure out 1 1/4" and down 1/4". 
This mark becomes the crotch extension for the back.  Draw in the curving line to connect the new crotch extension mark up to the crotch curve along the front pattern.

The last step is to draw in the
new "inside" leg line - drawing from the new crotch extension point to the bottom of the leg.

As with all pattern making, there have not been any
seam allowances added until the pattern is finished.  Draw in the
5/8" seam allowances as shown with dashed lines, and make a 2" hem at
the bottom of the shorts.  NOTE:  3" has already been added to
the pattern during the drawing process to allow for the elastic casing,
so there is no need for any other seam allowance along the waistline.

How to estimate fabric requirements

44" wide material requires 2 shorts lengths
plus 10" (3" elastic casing on each and 2" hem on each) - or better yet,
measure the finished pattern AFTER drawing in the hem, etc and use that
as your actual length.

54" wide material requires 1 desired shorts
length plus 5" (3" elastic casing and 2" hem) - or better yet, measure
the finished pattern AFTER drawing in the hem and use that as your
actual length.

NOTE:  These measurements will vary according to
what your own personal hip measurement is.  For larger sizes, after
completing the shorts pattern, measure the width of the widest part of
the shorts back (probably the crotch / crotch extension line), plus seam
allowances to determine if that plus the front pattern piece will fit on
the folded 54" wide material, or if you will need 2 lengths of the
fabric.

Laying the pattern on the fabric

Draw in a "straight grain" line in the center of the shorts that is parallel to the side.  Lay the pattern on the fabric as indicated.  If the pattern is small enough and the fabric wide enough, both pieces can be placed side by side on the folded fabric.

Sewing the seams of the shorts

Pin and sew the front crotch seam (A), and then the back crotch seam.  Next place the front and back pant sections right sides together.  Pin and sew the outside leg seams, sewing from the top to the hem edge (B).

Stitch the inside leg seams (C) sewing from the
crotch to the lower hem edge on each leg.  don't sew up one side and down the other as this may cause the shorts to hang incorrectly.

Inserting the elastic into the casing

To make the elastic casing, finish the upper edge of
the shorts by zig zagging or using a serger stitch.  Fold under 1/4" and press (A).  Fold the casing 1" as shown.  Pin in place, then stitch, leaving about 2" not sewn at one side seam (B).  This is where you will insert the elastic.

Cut the elastic the desired length.  Attach a
safety pin at one end of the elastic (C).  Work the pin / elastic through the casing beginning at the unsewn area.  Work the elastic all the way through the casing, making sure to keep the other end outside the casing (it may be a good idea to pin the loose end to the fabric so it won't accidentally slip through the casing).  After threading the elastic through the casing, overlap the elastic ends (D) and machine stitch the ends securely.  Evenly space the elastic, then finally, stitch the previous "unsewn" area.

Hemming the shorts

The final step is to sew the hems in the legs. 
Fold under 1/2" and press.  Fold under another 1/2" and pin in place, then sew the hems.

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the entire volume of pattern making for slacks / shorts by clicking on the link below.  You will
be able to learn how to make virtually every style of slacks, including gathered waists, waists with darts and pleats, and the ever popular split skirts as well as all types of shorts. Best of all, they will all fit perfectly because you'll be using YOUR OWN MEASUREMENTS for each pattern!

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