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The very detailed production process of the tri-fold handbag

Sharing a method of making a three-fold handbag from the author Ban Diao Yanyu. There are many steps. If you are interested, please read below!
For me, this handbag has a little more components. Now I have numbered it based on the original model:

The very detailed production process of the tri-fold handbag

Judge the production method and follow the production method Made in different groups.
1. C3 card area
1. Unloading.

The very detailed production process of the tri-fold handbag

C3-a upper half upper left and right Three sides are rough cut, and the lower half is finely cut on 5 sides.
Roughly cut the material at the middle and lower clamping positions (C3-b to C3-g), finely cut the adhesive-backed nylon, and stick the adhesive-backed nylon along the fold line or fold line. The left and right and lower edges of the adhesive-backed nylon are larger than the clamping positions. The accuracy is 5mm.
Roughly cut the bottom fabric in area C, indent 5mm on each side of the adhesive-backed nylon, and stick it to the back of the bottom leather.
2. Finely cut the upper clamping position (C3-b to C3-f) and thin the upper edge

The very detailed production process of the tri-fold handbag

The very detailed production process of the tri-fold handbag

3. Fold the upper card position and lower the Card slot folded in half

The very detailed production process of the tri-fold handbag

4. Upper card position (C3-b Go to C3-f) Finely cut the edges on the left and right sides, leaving the bleeding bits on the left and right sides
The lower card position (C3-g) is not finely cut.

The very detailed production process of the tri-fold handbag

5. Thin the lower edge

The very detailed production process of the tri-fold handbag

6. Press the upper edge of the card position behind this side (C3-b to C3-g)

The very detailed production process of the tri-fold handbag

7. Paste the adhesive-backed nylon Mark the fitting position of the card position on the bottom leather

The very detailed production process of the tri-fold handbag

8. Place C3-a along the marked line Completely adheres to the base leather

The very detailed production process of the tri-fold handbag

9. Lower edge stitching

The very detailed production process of the tri-fold handbag

10. Fit the upper card position (C3-b) and sew the lower edge

The very detailed production process of the tri-fold handbag

11. Make the remaining 4 card slots in sequence (C3-c to C3-f) and 1 piece of lower clip (C3-g). The lower clip is only for fitting, without stitching.

The very detailed production process of the tri-fold handbag

12. Tailor a strip towards the inside of the handbag The long side

The very detailed production process of the tri-fold handbag

13. Cut the seams on the long side of the tailoring. The holes should be cut accurately where the card joints are connected, and do not leave any gaps.

The very detailed production process of the tri-fold handbag

14. Sewing the edge and pressing the line

The very detailed production process of the tri-fold handbag

15. Top oil

The very detailed production process of the tri-fold handbag

Okay!
2. C1, C2, A1
The production methods of these three areas are the same.
1. Rough cutting. Each area is composed of 1 piece of dough, 1 piece of bottom leather and 1 piece of adhesive nylon. The nylon adhesive backing is accurately cut into 5mm and attached to the back of the base leather.

The very detailed production process of the tri-fold handbag

2. Cut the edge of the lower half of the dough as shown in the figure

The very detailed production process of the tri-fold handbag

3. Thin the lower edge of the dough

The very detailed production process of the tri-fold handbag

4. Mark the dough fit on the land position and fit the dough

The very detailed production process of the tri-fold handbag

5. Finely cut the long side inward

The very detailed production process of the tri-fold handbag

6. Tailored long edges with cut seams

The very detailed production process of the tri-fold handbag

7. Sewing the edge and pressing the line oil on top

The very detailed production process of the tri-fold handbag

8. Paste C2 on C1

The very detailed production process of the tri-fold handbag

9. Paste C3 on C2

The very detailed production process of the tri-fold handbag

A1 spare.
3. A2, A3
1. Roughly cut the A2 material, indent the edge of the adhesive-backed nylon part by 5mm as shown in the picture, and fit it along the hem line.

The very detailed production process of the tri-fold handbag

2. Cut the upper edge of A2 and shave it Thin

The very detailed production process of the tri-fold handbag

3. Folding

The very detailed production process of the tri-fold handbag

4. Cut the lower half of A2, leaving the left and right bleeding spots

The very detailed production process of the tri-fold handbag

5. Press the folded edges

The very detailed production process of the tri-fold handbag

6. Thinning the bottom edge of A2

The very detailed production process of the tri-fold handbag

7. A2 is attached to A1

The very detailed production process of the tri-fold handbag

8. A2 bottom seam

The very detailed production process of the tri-fold handbag

9. A3 rough material cutting, backing The left and right sides of the rubber nylon are indented by 5mm and fit on the back of the A3 leather.

The very detailed production process of the tri-fold handbag

10. Mark the position and install the four-button buckle (Forgot to take a photo, draw a schematic diagram), stick a slightly larger piece of adhesive-backed nylon on the dark side of the snap button to reinforce it.

The very detailed production process of the tri-fold handbag

The magnetic buckle used here is better looking . But I'm afraid of degaussing...… used four-button buckle instead
11. Fold in half

The very detailed production process of the tri-fold handbag

12. Press the decorative line on the folded edge

The very detailed production process of the tri-fold handbag

13. A3 is pasted on A2

The very detailed production process of the tri-fold handbag

14. Cut the suture in the middle line (forgot Take a picture of the stitched line...), running through A2 and A3

4. Inner bag
1. Roughly cut three pieces of material: one for the inner and outer skins , a piece of soft and thin bran paper

The very detailed production process of the tri-fold handbag

2. Bonding the leather bran paper to the outer skin

The very detailed production process of the tri-fold handbag

3. Install four-button buckles on the inner and outer skins respectively two parts of

The very detailed production process of the tri-fold handbag

The very detailed production process of the tri-fold handbag

4. Internal and external batch matching

The very detailed production process of the tri-fold handbag

5. Tailoring

The very detailed production process of the tri-fold handbag

6. Organ pleats, fold the two pieces of skin Precision cutting and blanking after the materials are pasted

The very detailed production process of the tri-fold handbag

7. Cut the four sides of the accordion pleats and top Oil the edge seams and press decorative lines on all four sides

The very detailed production process of the tri-fold handbag

8. Make the cut holes on the large surface. Sew the edges that are not sewn with the accordion pleats and outer skin first.

The very detailed production process of the tri-fold handbag

The very detailed production process of the tri-fold handbag

9. Accordion pleats, not sewn with the outer skin Fit one side first and sew

The very detailed production process of the tri-fold handbag

10. The upper edge of the inner bag opening Oil

The very detailed production process of the tri-fold handbag

5. Overall combination
1. Outer skin and inner layer, one piece each of leather and leather bran paper

The very detailed production process of the tri-fold handbag

2. Fitting

The very detailed production process of the tri-fold handbag

3. Fine tailoring

The very detailed production process of the tri-fold handbag

4. A strip sewn between the middle and the inner bag suture

The very detailed production process of the tri-fold handbag

After sewing like this

The very detailed production process of the tri-fold handbag

5. Roughly cut a piece of outer skin. Attach a slightly larger adhesive nylon reinforcement to the position where the four-button buckle is installed, and install the four-button buckle (I forgot to take a photo, so I will draw a picture...)

The very detailed production process of the tri-fold handbag

6. Cut a piece of bulging inner skin Lining, indent 4mm on all sides.
I used a piece of leather bran paper at first, but after applying it I felt it was too hard, so I replaced it with 0.5 sheepskin and it worked. I only took photos of leather and bran paper.

The very detailed production process of the tri-fold handbag

7. Stick it on the outside of the outer skin and inner layer, Center, leave space on all sidesSeam space. (I forgot to take a photo again, so I held my forehead...)
Roughly cut the outer layer of the skin and stick it on the outermost layer. I think the skin made this time is a bit thick, so it bends when fitting. The position is slightly curved.
Drum and shape, then tailor the outer layer of skin along the edge of the inner layer.

The very detailed production process of the tri-fold handbag

8. Area A and Area C are posted on Inside skin

The very detailed production process of the tri-fold handbag

9. Cut area A along the edge of the outer skin , edge of area C

The very detailed production process of the tri-fold handbag

10. Fit the other side of the accordion pleat good

The very detailed production process of the tri-fold handbag

11. Cut the sutures on all four sides (I cut the stitches on both sides in order to ensure accurate cutting position and fit them well. On both sides, cut the stitches to the depth on each side. ...I don't know if there are any disadvantages...)

The very detailed production process of the tri-fold handbag

The very detailed production process of the tri-fold handbag

12. Press decorative lines inside and outside, and oil the top

The very detailed production process of the tri-fold handbag

Then it’s over!

The very detailed production process of the tri-fold handbag

The very detailed production process of the tri-fold handbag

The very detailed production process of the tri-fold handbag

The very detailed production process of the tri-fold handbag

The very detailed production process of the tri-fold handbag