In our last lesson, we translated your raw body data into draft-ready "working measurements" by incorporating the crucial concept of wearing ease. You calculated your unique Bodice Block Width, which represents half of your working bust circumference. This single number is the horizontal foundation for your entire pattern.
Now, we move from calculation to construction. This lesson is about translating that key width, along with your vertical body measurements, into the tangible starting point of your pattern: the core rectangular framework. Think of this as creating the foundational grid or blueprint upon which all the specific details of the bodice—necklines, armholes, and darts—will be drawn. Your background in industrial design will be an asset here, as we are essentially creating a 2D plan for a 3D object.
By the end of this lesson, you will have a neatly drafted rectangle on your pattern paper, marked with the essential reference lines that will guide the entire drafting process for both the front and back of your bodice block.
From Numbers to a Blueprint
Before you begin, have your list of body measurements and your calculated Bodice Block Width from the previous lesson at hand. The primary measurements we will use today are:
- Nape to Waist: This determines the overall height of your pattern.
- Nape to Bust Line: This positions the bust line vertically within the framework.
- Bodice Block Width: This sets the width of the entire framework (for both front and back pieces combined).
The process of drafting this framework is systematic. We will establish a series of points and lines in a specific order to build the structure accurately. For a visual demonstration of this entire process, the following video provides a clear, real-time walkthrough. Watching it will give you a strong mental model before you start drawing.
How to Pattern Draft | Drafting a Bodice Block
This video from Minerva, featuring patternmaker Izzy, demonstrates the creation of the initial rectangular block. It's a great way to see the steps in action before you perform them yourself.
Focus on the segment from the drafting process. Observe how she uses the calculated width (half bust + ease) and the nape-to-waist length to draw and label the initial rectangle. Note how she labels the Center Back, Center Front, and Waist Line.
Drafting the Framework: A Step-by-Step Guide
Now, take your large sheet of pattern paper, a sharp pencil, and a long ruler. We will follow a methodical process outlined in the excellent tutorial from In the Folds. This guide uses a standard point-and-line lettering system that is common in pattern drafting.
This guide will walk you through creating each line of the framework with precision. Follow the steps carefully to build your block.
Begin at the section titled "Construct the Centre Back". Follow these steps in order: Draw the Center Back (CB): Follow the instructions to draw the vertical line A-B using your Nape to Waist measurement. Also, add the small extension to create point C. This line is the anchor for the entire draft. Draw the Bust Line: Continue to the section "Construct the Bustline". Here, you will use your Nape to Bust Line measurement to locate point D, and then your Bodice Block Width (half working bust) to draw the line D-E. Draw the Waist Line: Now, find the instructions for the "Waistline". Square out from point B to F, making this line the same length as your bust line (D-E). Complete the Rectangle: Finally, follow the steps under "Construct the Centre Front". This involves drawing the vertical line F-G to complete the rectangle and then connecting G to C. After completing these steps, your paper should contain a large rectangle with one internal horizontal line (the bust line).
Reviewing Your Framework
Once you have completed the steps, your drawing should resemble the foundational diagrams below. You have successfully created the geometric scaffold for your bodice block.
This rectangle is not yet a pattern, but it is the most critical starting point. It contains all the primary vertical and horizontal information of your torso, proportioned correctly and with the necessary room for movement already built in. Every curve and dart we add from this point forward will be in relation to this carefully constructed grid.
While the In the Folds tutorial is our primary guide, the article "How to Draft a Bodice Pattern" from Sewing For A Living offers a slightly different visual presentation of the same steps. You can review its initial diagrams if you'd like another perspective on the process you just completed.
How to Draft a Bodice Pattern: A Step-by-Step Tutorial | Sewing For A Living
This resource offers a complementary visualization of the framework drafting process. You don't need to re-draft anything, but looking at its diagrams can help solidify your understanding.
Review the diagrams from figure 1 to figure 4 in the section "Outline the basic bodice pattern". Notice how the author builds the same A-B-C-D-E-F-G framework using the same core measurements.
Conclusion
In this lesson, you took the abstract calculations from our previous session and gave them a physical form. You have drafted the core rectangular framework of your bodice block, establishing the height, width, and key horizontal guides for your pattern. This methodical process ensures that the foundation is accurate before any shaping is introduced.
Key Takeaways:
- The bodice block begins with a simple rectangle defined by two key dimensions: the Nape to Waist measurement (for height) and the Bodice Block Width (for width).
- This framework is divided by crucial horizontal guide lines: the Bust Line and the Waist Line.
- The Center Back and Center Front lines form the vertical boundaries of your half-pattern.
You have now set the stage perfectly for the real shaping to begin. In our next lesson, we will focus on the back portion of your block, using this framework to plot and draw the back neckline and the slope of the shoulder.
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