There are several kinds of presser feet for industrial sewing machines (flat cars)-Perfect (expedited delivery for 395 minutes).

The presser foot is one of the key parts of sewing machine. In old sewing machines and industrial flatcars, the presser foot is not very noticeable, because these machines pay more attention to sewing skills, and often one or two kinds of presser feet produce countless exquisite handicrafts. When I use the industrial flat car, I only use three kinds of presser foot: ordinary presser foot, unilateral presser foot and high and low presser foot. With the help of the upper third sewing machine, basically all woven garments can be made.

But now electric multifunctional household sewing machines are very popular, and I bought them myself. The sewing function of household sewing machine is not as good as that of industrial flat car, but it has many functions and is expensive, and everyone has high expectations for it. In particular, it is said that various special presser feet can make the functions of household sewing machines more perfect. Unfortunately, I have browsed all the Internet, but I can't find the professional content and detailed explanation about the presser foot. There are only many questions such as "Can the presser foot be universal?" "How to use the presser foot? ""a presser foot is not easy to use, which one can explain "and so on. This makes everyone stare at each other and think this little thing is magical and naughty. If you want to use the presser foot to achieve the effect on the instructions, you have to buy a more professional machine.

I have a bunch of presser feet in my hand, which look roughly the same, but the difference is only the details. Because I don't want to buy a left machine and a right machine, I want to use these presser feet to make my sewing machine play as many roles as possible, so the research on presser feet began.

One of the presser foot articles: sewing edges and presser foot

The first experiment is to lock the edge and press the foot, because this is very important: if the sewing function of the household sewing machine is not enough, even if it is sewed well, the sewing task can hardly be completed.

Experimental objectives:

1. Does the stitch meet the sewing requirements?

2. Does the edge meet the requirements of finished products?

3. Is the operation easy to master?

4. What are the advantages and disadvantages?

Ok, let's start ~

Step 1: Install

Compare the advertising pictures of the merchants, and pick out the sewing edge to press the feet-it looks a bit strange: there is a small black iron piece wrapped in the middle, and I don't know what it is for. The installation part is very easy, because it is a presser foot rod, so it is enough to embed it in the presser foot groove.

Step 2: Try sewing.

After loading the needle, select the No.3 folding line, carefully turn the handwheel to see the position of the lower needle, and then start pedaling until it is completely in the eyes on both sides of the presser foot-please pay attention to this, as well as the unfamiliar needle distance, presser foot, needle width and so on. It may cause the needle to touch the presser foot or needle board, so you must try it before starting.

Sewing is normal, along the edge, very neat, the stitches are a little loose, but the edge can be guaranteed to be not loose.

Step 3: Study the stitches.

In fact, there is not much research, because 5500 have a few stitches.

1, straight line, nice car.

2, 5 fold line, the edge of the lock is too thin to play the role of locking edge, give up.

3. The seam with the folding line number 12 is very good, but the side lock is still too thin. The needle pitch was adjusted to the minimum, and the needle pitch was very close, but the knot on the edge was still thin, so I gave up-I had expected the fabric to be stitched and locked once, but it seemed impossible.

Double fold lines 4 and 4, adding two half folds between the wide fold lines, will not work because the needle can't go down-there is a small bar in the middle of the sewing presser foot.

For crease lines 5 and 3, the sewing effect is very good by adjusting the needle distance to 2 and the needle width to 4. Add a straight line behind the sewing edge, which is very neat and completely meets the sewing requirements.

Let's look at the effect of edge locking first:

Step 4: Study the presser foot.

Why is sewing presser foot called sewing presser foot? What's special about it? -There are two special places.

Unique:

Let's look at the front view first. The box mark is the installation position. As long as there is a presser foot with this rod, it can be installed, that is, it can be used universally. The round mark is the unique feature of hemlock presser foot.

First of all, pay attention to the black iron sheet. From the effect of the half side, we can see that the height of the script is higher than the desktop-when the cut sheet is placed under the presser foot, it will not move to the right due to the blocking of this small iron sheet, which ensures that the stitches are at the edge and will not turn to the middle.

Look over here:

Look at the reverse side again, is that clear? Why do you wrap it like this instead of simply casting it? This is exquisite. I tried it, and this small iron piece can be pushed, with good elasticity and adjustable protrusion height, which can ensure that both thick and thin materials can be turned over.

Unique two points:

Look carefully at the circle in the middle. There is a small vertical bar.

Look at the opposite side: only one end of this stick is dead, and the other end is open. What's the advantage of this: when sewing broken thread, the needle swings left and right, and the upper thread will appear left and right. This zigzag thread will first wrap around this small rod, and then it will be taken off from the other end as the cutting piece moves forward, which will not affect the normal sewing of the zigzag thread-it will not affect it without the vertical thread. That won't do. The function of this lever is actually to press the cutting piece to prevent the edge from rolling up. If you don't believe me, try the universal presser foot. The edge of the lock is not flat.

However, the sewing presser foot in my hand is not very good, and the vertical bar in the middle is a bit too thick, as can be seen from these pictures from different angles. If it is too thick, the thread of the package will become longer and the stitches will be loose after falling off, so the edge line of my car is really loose, but fortunately it is acceptable, and it will be perfect with a little improvement.

Analyze what a locked edge is:

Because what we have always seen is the stitch of industrial three-thread machine or four-thread machine lock, which is very neat and simple, some MM have a misunderstanding that it is the highest state of sewing. If the remaining sewing stitch is not like that, it will not look good, not beautiful and not high-grade, so they will try their best to buy a good machine and make it the same.

In fact, there are many kinds of sewing stitches. The simplest one is that we lock the buttonhole by hand: each stitch is tied with a knot, so that the edge will not spread under one knot after another, thus achieving the purpose of sewing. No matter how simple it is, the edge sewn by machine is stronger and more beautiful than that sewn by hand. If hand-sewn hemming can achieve the effect of leaving no edges, then machine hemming is more important. As a matter of fact, the side of the No.3 crease lock is still very strong except that the stitches are a little loose. The effect of single-layer lock is the same as that of double-layer lock, so it is no problem to make daily clothes.

Take a closer look:

The stitches are neat and a little loose. You can pull this thread by hand, but it won't come loose.

The edge is very obvious. I added a straight line after locking the edge, which is also a presser foot car. Similarly, because the edge is blocked, the position of the straight line is just at the edge of the broken line, so it is straight and labor-saving.

As for whether the stitches are beautiful, that is a matter of habit. I don't think the stitches locked by the three-wire machine look good. I used to hate that kind of edge. Like a caterpillar, I always tried to avoid it.

In addition, this sewing presser foot can't be closely copied, because the vertical bar in the middle limits the width of the needle, and the narrowest needle can only be adjusted to 3, and then a small needle will come over.