How to sew a buttonhole on your automatic sewing machine
TIP-automatic sewing machine
To determine the correct stitch length, we recommend you sew a test buttonhole on a scrap of fabric.
Set the foot and needle to their highest position.
- Replace the foot with the buttonhole presser foot.Please read section “Removing and fitting the presser foot”.
- Using a pencil or tailor’s chalk, mark the place on the fabric where you want to sew the buttonhole and mark the required length of the buttonhole.
- As shown, line up the buttonhole foot with the slide at the rear end of the buttonhole.
- Pass the upper thread through the opening on the buttonhole sewing foot and pull both the upper and lower thread to the left-hand side.
Procedure
-Select the program for the left-hand bar “”on theprogram selection dial.
- Lower the foot and sew slowly until the bar is the required length.
- Raise the needle to its highest position and change to the program for the bottom bar “ - Sew a few stitches of the bottom bar.
- Raise the needle to its highest position again andchange to the program for the right-hand bar “”.
- Now sew the right-hand bar exactly the same length as the bar on the left-hand side.
- Move the needle to its highest position and select the program again for the top bar “”.
- Then sew a few stitches for the top bar as you did for the bottom bar.
buttonholes is okay, next step is open the buttonholes. This can be done easily with small, sharp scissors. It is very important not to touch the saw tooth line when cutting.
Introduction and selection of automatic sewing machine needle:
There are many types of sewing machine needles. Careful, you may have noticed the marks such as size 75 / 11 on the packaging of the sewing machine. What do 75 and 11 stand for here? In fact, it also refers to the model. The front is made in Europe and the back is made in the United States. The following is the comparison table between American and European systems:
European systems: 60 65 70 75 80 90 100 110 120
American systems: 8 9 10 11 12 14 16 18 19
Our country usually adopts the American name, such as #11 needle, # 14 needle and so on
Whether European or American, the smaller the number, the thinner the needle.
The needle selection is mainly based on the thickness of the cloth. The thinner the material, the thinner the needle. If you use a thick needle to sew thin cloth, you will leave large needle holes on the cloth, which is very unsightly. On the contrary, if you use a thin needle to sew thick cloth, it is easy to break the needle.
So many models, should we prepare them one by one? Of course not. Ordinary household is generally #11 and #14. # 11 is used to sew muslin, and #14 is used to sew canvas, denim or patchwork. Further consideration can be given to # 9 and # 16. # 9 can sew window screen knitted cotton, # 16 can sew thick canvas and so on.
Introduction and selection of automatic sewing machine thread:
The models and specifications of sewing thread are more abundant. Let's introduce the most commonly used polyester thread. Now most of the lines on the market are also such lines.
The common models of polyester thread are: 20s / 2, 20s / 3, 30s / 2, 30s / 3, 40s / 2, 40s / 3, 50s / 2, 50s / 3, 60s / 2, 60s / 3, among which the most common is 40s / 2.
What does the model of polyester thread mean? The first half of "/" indicates the number of yarns. 20s is 20 yarns and 30s is 30 yarns. What is "number"? Count refers to the total length of 840 yards (1 yard = 91.4 cm) of yarn spun from one pound (453.6 g) of raw materials. The total length of 16800 is 20s, and the total length of 33600 is 40s. It's complicated, isn't it? In fact, we only need to know that the larger the number in front of S, the thinner the yarn.
What does 2 or 3 after "/" mean? This refers to the number of strands of yarn. You can take the sewing thread at hand and take a closer look. It's not a single yarn, but two or three strands twisted together. The expression of 2 shares is / 2, and 3 shares is / 3.
20s / 2 means that the sewing thread is twisted by 2 strands of 20 yarns, and 20s / 3 means that the sewing thread is twisted by 3 strands of 20 yarns.
As with needle selection, fine thread is selected for thin cloth and thick thread is selected for back material. 40s / 2 thread is most commonly used for household sewing. It can be used to sew ordinary cloth. 20s / 2 thread can be used for thick material or surface decoration.
automatic sewing machine
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