Blazer 3 Sewing Patterns | DRCOS Patterns & How To Make

Blazer 3 Patterns (pay pattern.)

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This is the pattern for Blazer III, which had been requested.

As with Blazer II, there were concerns about the difficulty in understanding the decorative structure in the tailored collar section, so I have created a pattern for it.

Unlike Blazer II, this version has a slightly longer length and features simple side vents on both sides.

The simple vents are designed to be straightforward, requiring only folding during drafting, so challenging adjustments like shifting the seam allowances have been omitted.

The sleeve section includes a slight Edging Contracting structure.

When attaching the lining, use the Facing line provided to create the lining fabric pattern.

This design features an open front and is not meant to be worn with the buttons fastened, so please keep that in mind.

The chest has a welt pocket, while the waist features flap double piping pockets, giving the blazer a more authentic feel, which increases the level of difficulty slightly.

For those who don't intend to use the pockets, you can lower the difficulty by skipping the pocket construction and attaching dummy pockets and dummy flaps instead.

The pattern is drafted assuming that it will be worn with a vest underneath, so there is a slight allowance around the chest area.

If you prefer a tighter fit, you can go down one size, as the open-front design allows it to still be wearable.

After printing, align the pieces along the joining lines, attach them together, and cut them out before use.

The seam allowances are included in the pattern, so it can be used as is.

Sleeve part description icon

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  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts

How to make Aladdin Pants

The production process is explained with translation software.

* If Lining Fabric is required, the Facing line is provided, so please use it to create the pattern for the Lining Fabric.

* If you don't need pockets, simply attach the dummy pockets for convenience.

* If vents are not needed, cut off the vent section and proceed with the rest.

(1) Stitch and press the darts on the “Front bodice.”

Icon image of Paper pattern making pointHow to sew darts

(2) Apply fusible interfacing to each part as required.

(3) Create the pockets at the designated pocket positions.

(4) Iron the “Collar Decoration” and “Lapel Decoration,” and sew them along the Decoration Alignment Line.

* Since the Decoration adds thickness to the tailored collar section, it is also possible to sew it on later.

(5) After sewing the “Front facing” and “Back facing” together, press the seam allowance open and finish the edges.

Icon image of Paper pattern making pointHow to Serge/overlock (sewing machine & overlock sewing machine)

(6) Finish the edges of the “Front bodice” and “Back bodice” at the shoulders, sides, side vent, the center back of the “Back bodice,” and both sides of the “Under sleeve” and “Top sleeve.”

(7) After joining the shoulders of the “Front bodice” and “Back bodice,” press the seam allowance open.

* If it’s difficult to shape with the iron, you can stitch the seam allowance open for a cleaner finish.

(8) After attaching the “Collar” to the facing and bodice following steps (A) to (C), press the seam allowance open.

* After sewing, remove any excess fusible interfacing from the seam allowance and trim any unnecessary parts to reduce thickness.

(9) After sewing the side seams of the bodice up to the stop position, press the seam allowance open.

(10) Finish the hem of the bodice, iron the hem into shape, and when sewing the Facing to the bodice, also fold and sew the Side vent in place.

Icon image of Paper pattern making pointHow to sew Facing and Hem

* Since this is a simple Side vent, it should be fine to leave it open, but if desired, you can tack it in place with hand stitches.

(11) After sewing the center back of the bodice, press the seam allowance open.

(12) After sewing the side seams of the “Under sleeve” and “Top sleeve,” press the seam allowance open.

* The seam allowance of the “Sleeve” can also be stitched open near the armhole for a clean finish.

(13) Finish the hem of the “Sleeve,” press a 1 cm fold, and sew it in place with a machine stitch.

(14) Add the Edging Contracting at the designated position on the “Sleeve,” then sew the “Sleeve” to the bodice, and finish the armhole edges.

(15) Sew the button at the designated button position, and sew the buttonhole at the designated buttonhole position.

Icon image of Paper pattern making pointHow to sew on buttons

Icon image of Paper pattern making pointHow to make buttonholes

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cm size pattern paper explanation icon

Children's 140 size
shoulder36cm bust83cm(Open front design) length62.5cm A4 paper size 16 sheets
Blazer 3 Free Paper pattern download button fabric needed cutting diagram button icon
Sleeve parts 43 size

Children's 10 size
shoulder14.2in bust32.7in(Open front design) length24.6in letter paper size 17 sheets
Blazer 3 Free Paper pattern download button
Sleeve parts 43 size


Ladies' S size
shoulder41.5cm bust95cm(Open front design) length66.5cm A4 paper size 19 sheets
Blazer 3 Free Paper pattern download button fabric needed cutting diagram button icon
Sleeve parts 44 size

Ladies' S size
shoulder16.3in bust37.4in(Open front design) length26.2in letter paper size 21 sheets
Blazer 3 Free Paper pattern download button
Sleeve parts 44 size


Ladies' M size
shoulder42.5cm bust104cm(Open front design) length68.5cm A4 paper size 20 sheets
Blazer 3 Free Paper pattern download button fabric needed cutting diagram button icon
Sleeve parts 46 size

Ladies' M size
shoulder16.7in bust40.9in(Open front design) length27in letter paper size 23 sheets
Blazer 3 Free Paper pattern download button
Sleeve parts 46 size


Ladies' L size
shoulder43.5cm bust112cm(Open front design) length71cm A4 paper size 22 sheets
Blazer 3 Free Paper pattern download button fabric needed cutting diagram button icon
Sleeve parts 47 size

Ladies' L size
shoulder17.1in bust44.1in(Open front design) length28in letter paper size 25 sheets
Blazer 3 Free Paper pattern download button
Sleeve parts 47 size


Ladies' LL size
shoulder45cm bust118cm(Open front design) length74cm A4 paper size 23 sheets
Blazer 3 Free Paper pattern download button fabric needed cutting diagram button icon
Sleeve parts 51 size

Ladies' LL size
shoulder17.7in bust46.5in(Open front design) length29.1in letter paper size 26 sheets
Blazer 3 Free Paper pattern download button
Sleeve parts 51 size


Men's L size
shoulder48cm bust122cm(Open front design) length77cm A4 paper size 25 sheets
Blazer 3 Free Paper pattern download button fabric needed cutting diagram button icon
Sleeve parts 55 size

Men's L size
shoulder18.9in bust48in(Open front design) length30.3in letter paper size 26 sheets
Blazer 3 Free Paper pattern download button
Sleeve parts 55 size


Men's LL size
shoulder49.5cm bust126.5cm(Open front design) length79.5cm A4 paper size 26 sheets
Blazer 3 Free Paper pattern download button fabric needed cutting diagram button icon
Expanded sleeve parts 56 sizes to 105%

Men's LL size
shoulder19.3in bust49.8in(Open front design) length31.1in letter paper size 28 sheets
Blazer 3 Free Paper pattern download button
Expanded sleeve parts 56 sizes to 105%

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