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Using a Sewing Machine Power Point

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Using a Sewing Machine
Fashion and Interior Design
Page 455-464
Choosing Needle and Thread
пЃ¬Needle- Holds the upper thread on the
п‚ЎAlways replace when dull
Choosing Needle and Thread
пЃ¬Types of needlesп‚ЎUniversal or general purpose- sharp
п‚ЎBallpoint- rounded point for knits/stretch
п‚ЎStretch- synthetic suede or elastic knits
п‚ЎLeather-wedge- shaped point for heavy fabrics
п‚ЎTwin (double) and hemstitch (wing)- decorative
Choosing Needle and Thread
пЃ¬Needle Sizes- range from 6 (delicate) to
20 (very heavy)
п‚ЎLower = finer fabric
п‚ЎHigher = heavier
пЃ¬Size 9 or 11- lightweight (chiffon)
пЃ¬Size 14- medium weight (flannel)
пЃ¬Size 16- heavy weight
Choosing Needle and Thread
п‚ЎDetermined by type and weight of fabric
пЃ¬Light weight = fine needle, fine thread
(polyester/polyester-cotton blend), and short stitches
пЃ¬Medium weight = medium needle, heavier thread
(polyester/polyester-cotton blend: heavy duty), longer
пЃ¬Heavy weight = heavy needle, heavier thread
((polyester/polyester-cotton blend: heavy duty),
longer stitches
пЃ¶See figure 4-3
Changing Needles
1. Raise the needle to its highest point using
the hand wheel
2. Loosen the thumb screw
3. Remove old needle
4. Insert needle firmly up to the needle clamp
5. Tighten the screw
Preparing the Bobbin
пЃ¬Bobbin- holds the bottom thread
пЃ¬Must be removed from the case to wind
Preparing the Bobbin
пЃ¬Winding the bobbin
п‚Ў1. Loosen the hand wheel knob to prevent the
needle movement
п‚Ў2. Insert the end of the thread through the hole
in the bobbin
п‚Ў3. Wrap the thread securely around the bobbin
several times
п‚Ў4. Place the bobbin on the bobbin winder
п‚Ў5. Hold the end of the thread until the bobbin
starts winding
Preparing the Bobbin
п‚ЎWind the bobbin evenly. You may need to
guide the thread
п‚ЎFill about Вѕ full
Preparing the Bobbin
пЃ¬Inserting the Bobbinп‚ЎOpen the slide plate
п‚ЎInsert bobbin into its case
п‚ЎMake sure the bobbin thread unwinds the right
direction (refer to manual)
п‚ЎInsert case into machine
п‚ЎCheck the bobbin tension
Threading the Machine
пЃ¬General process is same for all machines!
пЃ¬From spool
п‚ЎTo thread guide (directs thread to keep it from
пЃ¬To tension discs
• To take-up lever (controls amount of thread)
п‚џ To more thread guides
o To needle
Threading the Machine
пЃ¬Tension Discsп‚ЎAlways check the tension before you being to
thread the take-up lever
п‚ЎIf too loose, thread will come out too easy
п‚ЎIf too tight, there will be a strong resistance and
thread may break
п‚ЎShould be some resistance but not too strong
Threading the Machine
пЃ¬Thread Guidesп‚ЎIf thread guide is on the right, thread needle
from the right
п‚ЎIf thread guide is on the left, thread needle from
the left
пЃ¶Pull at least 3 inches of thread from needle
Threading the Machine
пЃ¬Raising the Bobbin Thread
п‚ЎHold the thread from the needle in your left
п‚ЎWith your right hand, turn the hand wheel
toward you until the needle brings up the bobbin
п‚ЎCatch it and pull both pieces of thread to the
back of the machine
Adjusting the Machine
пЃ¬Sewing machines create a lockstitch when
needle thread intertwines with the bobbin
пЃ¬Adjustments to checkп‚ЎStitch
п‚ЎLength of stitch
Adjusting the Machine
пЃ¬Stitch Type
п‚ЎStraight stitch- most common
п‚ЎOther stitches- zigzag, stretch, decorative
пЃ¬Controlled by switch on machine
Adjusting the Machine
пЃ¬Stitch Length
п‚ЎNumbers 6-20 indicate the number of stitches per
п‚ЎNumbers 1-5 indicate length of stitch in millimeters
(4 means each stitch is 4 millimeters long or about
6 stitches per inch)
пЃ¬Regular stitching- medium length 10-12 stitches per inch
(2-2.5 mm)
пЃ¬Machine basting- longest stitch, 6-8 stitches (3-4 mm)
пЃ¬Reinforcement stitching- very short stitches, 15-20
stitches (1-1.5 mm)
Adjusting the Machine
п‚ЎBalanced stitch- threads lock in the middle
пЃ¬If top thread is flat on top and loops are pulling
through- top tension is too tight. Turn tension knob to
a lower number
пЃ¬If bottom thread is flat bottom and loops from the top
are visible underneath- top tension is too loose. Turn
tension knob to a higher number
Adjusting the Machine
п‚ЎPresser Foot- Holds fabric against the feed dog
(moves the fabric)
п‚ЎIf this pressure is off, your fabric will ripple or at
the end of your seam, one piece will be longer
than the other
Using the Sewing Machine
пЃ¬ Guidelines on Stitching
п‚ЎRaise the needle to the highest position and make sure
both threads are to the back of the machine
п‚ЎPlace fabric under presser foot. Put the bulk of the
fabric to the left of you
п‚ЎPosition the stitch line directly under the needle
п‚ЎTurn hand wheel to lower the needle into the fabric.
Lower presser foot. Add pressure to foot control
п‚ЎWhen you finish stitching, raise the needle to the highest
position, raise presser foot, slide fabric to the back of the
machine and clip threads
Using the Sewing Machine
пЃ¬Stitching Straight
п‚ЎUse your hands to guide the material but never
pull it through. This is the job of the feed dog
not you!
п‚ЎUse the guidelines on the throat or needle plate
to keep your stitches straight
Using the Sewing Machine
пЃ¬Stitching Problemsп‚ЎRethread the machine
п‚ЎCheck the needle
п‚ЎCheck the tension
п‚ЎRefer to chart 4-13 page 463
Sewing Machine Accessories
пЃ¬Straight-stitch foot
пЃ¬Zig-Zag foot- wide opening to allow needle
to move in the correct motion
пЃ¬Zipper foot- Adjust to right or left so stitch
is close to zipper teeth
пЃ¬Buttonhole foot- Marking for measurement
of button
пЃ¬Blind stitch-hem foot
Sewing Machine Care
пЃ¬Lint can clog the machine
пЃ¬Unplug machine before cleaning
пЃ¬Oil only if machine requires. After oiling,
stitch on scrap fabric to remove excess oil
Computerized Machines
пЃ¬Push button commands
пЃ¬LCD screens
пЃ¬Monograms, buttonholes, embroidery,
decorative stitches
пЃ¬Has memory to store designs
Things To Remember
пЃ¬Always sew 1st on a scrap piece of fabric
пЃ¬Make sure your pressure foot is down
before you begin to sew
пЃ¬Only turn the hand-wheel toward you
пЃ¬Never sew over pins
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