What is the purpose of a chain stitch?
Chain stitching is the traditional stitch used to hem jeans, and creates a vivid roping effect. It uses one continuous thread that loops back on itself. Using a chain stitch pulls slightly on the denim and causes the traditional rippling on the hem.
What is the most common cause of stitching problems?
Causes and Remedies Needle thread breakage. Bobbin or looper thread breakage. Thread fusing when the machine stops. Skipped stitches.
What is the cause of looping stitches?
Looped stitches are usually caused by improper tension. If the loop is on the upper side, it may be corrected by loosening the top tension or by tightening the lower tension. If the loop is on the under side, it is usually best corrected by adjusting the upper tension.
How do you avoid injury while using a sewing machine?
Tips to Avoid Injuries While Sewing
- Unplug Your Machine When You Are Not Sewing. Sewing machines often lead to unexpected shocks.
- Practice Proper Needle Use.
- Don’t Force a Foot.
- Always Remove Your Pins Before Sewing.
- Don’t Slump!
- Work at Comfortable Speeds – Don’t Rush.
- Always Focus on Safety.
Which of the following hazards is always encountered when using sewing machine?
Hazards that may be encountered when conducting sewing activities include: • Cut and injuries from sharp edges, knife blades, scissors and pins. Holding the wrist in awkward position while cutting with scissors cause injury to the wrist.
How are we going to avoid injury in a sewing machine?
Keep your attention on your work and hands. Keep your hands at a safe distance from the needle. Keep your hands, scissors, and other sharp objects away from the belt. Keep the machine and work station clean with tools in the side drawer.
What will you do if there is a problem with the stitch tension of the upper thread?
If the tension isn’t perfect, fix it by adjusting the bobbin spring; tighter if the bobbin thread shows on the upper layer, and looser if the needle thread shows on the underlayer. Make another test seam, and examine the stitches, repeating until the stitch is balanced.
What are the different types of chain stitch?
Crested chain stitch: a variation of chain stitch that incorporates a coral knot on top. It can be worked open, closed, small, large, for different looks. Detached chain stitch: the ubiquitous daisy stitch – the easiest petal-shaped stitch, it consists of one chain all by itself.
What is chain lock stitch?
Chain stitch is formed by two or more sets of threads named needle thread and looper thread. Lock stitches are formed by two sets of a thread named needle thread and bobbin thread. 02. Thread consumption of chain stitch is higher than lock stitch. Thread consumption of lock stitches is less than chain stitches.
What are the basic differences between chain stitch and lockstitch?
Difference between Chain Stitch and Lock Stitch:
| S/L | Substance | Lock stitch |
|---|---|---|
| 07 | Back Taking | Stitches are secured by back tacking at starting and finishing end. |
| 08 | Stitch Speed | Generally lock stitch m/c speed 6000 spm. |
| 09 | Thread Consumption | Thread consumption of lock stitch is less. |
What are the hazards of sewing?
How can injury be prevented?
To reduce the risk of injury:
- Take time off.
- Wear the right gear.
- Strengthen muscles.
- Increase flexibility.
- Use the proper technique.
- Take breaks.
- Play safe.
- Do not play through pain.
What accidents could occur with a sewing machine?
Sewing machines often lead to unexpected shocks. The power cord on machines can wear out over the years, and exposed wires make for very dangerous environments. Always unplug your cord to avoid shocks. But, there’s an even better reason to unplug your machine, and that’s to avoid stitching through your fingers.
How can sewing machines prevent injury?
Sewing Machine Safety: 10 Tips To Avoid Injury
- Learn the Distance.
- Keep Your Hair Out of the Way.
- Concentrate.
- Make Sure Your Pins and Needles Are Intact.
- Don’t Sew Over Pins.
- Use the Right Machine.
- Be Mindful of Electricity.
- Listen to Your Machine.
Is a chain stitch secure?
The strength of chain stitches is greater than lock stitches. The strength of lock stitches is less than chain stitches. In the case of chain stitch, extensibility stands normally at 30%. Here, extensibility is less than 30%.