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Pattern Drafting 101 – The Men’s Shirt Block

17 February, 2011

These Pattern Drafting posts seem to be really popular- thank you so much!

Next up in the Pattern Drafting 101 Series, the Men’s Shirt Block, again from Gedwood’s BurdaStyle tutorials, located here. This block will not be as form-fitting as the women’s bodice block, but for the most part, men’s fashions tend toward looser styles. With a little tweaking (and we’ll be getting into some “uber-leet pattern editing hax” later), you can use this block to create more tailored men’s fashions. This one is a little long, since it incorporates the sleeve as well, so I’m going to split this post into two.

Again, you will need pencils and a large pad of paper, a long ruler, and a french curve.

* ** *** ** *

Step 1: Mark Point A. Orient your paper in landscape orientation, or with the longest dimension running horizontally in front of you. Mark a point in the upper left hand corner about 1cm from either edge of the paper. Mark this point A. Draw straight down from this point the distance of the armscye depth + 2.5 cm. Mark the endpoint B.

Step 2: Mark Point C one half the chest measurement + 8cm to the right of Point B. Connect points B and C. Line BC is the Armscye line of the shirt.

Step 3: Draw straight up from Point C the same distance as line AB. Mark the endpoint D.

Step 4: Draw guideline AD. This line won’t show up in the finished product, so you may want to draw it in lightly.

Step 5: Extend the line AB downwards until the whole line measures the distance of the waist length + 1cm. Mark the endpoint E. Do the same for line DC, marking that endpoint F. Connect E and F with a horizontal line. This line should be the same length as line BC. Line EF is the waist line of the shirt.

Step 6: Extend the line AE downwards again to the desired length of the finished shirt, plus 1 cm (3/8 in.) and mark the end point G. Do the same from line DF, marking the end point H. Connect points G and H with a straight line. Line GH is the hemline of the shirt.

Step 7: Measure along the Armscye Line a distance of half the back measurement plus 2.5cm. Mark that point I. Draw a perpendicular line from Point I to Line AD. Mark the point where they meet Point J.

Step 8: Measure from point B along the Armscye Line, a distance of 1/3 of the chest measurement + 1.5cm. Mark the endpoint K. Draw a vertical line upward from point K 3.5cm. Mark the endpoint L. Later on, we’ll use Line KL to help us define the sleeve.

Step 9: Measure the distance from point I to point K along the Armscyle Line. From point K, mark a distance of half the IK measurement minus 0.5 cm  to the left along the armscye line. Mark this point M. Draw a vertical line down from this point, crossing the Waist Line (mark the intersection point N) and meeting the Hem Line (mark this point O).

Step 10: Measure the distance of ½ the Armscye depth plus 1cm down from point A. Mark this point P. Draw a horizontal line from point P to meet the line IJ. Mark this point Q.

Step 11: From point A, measure 1/5 of the neck measurement minus 0.5cm to the right. Mark the end point R. Draw a short vertical line up 2cm from Point R. Mark the end point S. Draw a curved line from point A to point S. This is the back of the neck line.

Step 12: Measure up from point Q ¼ of the Armscye depth plus 4 cm. Mark this point T. Then measure 3.5cm to the right of Point T. Mark this point U.

Step 13: Connect Points S and U with a straight line. This is the back shoulder seam.

Step 14: Measure 1/5 of the neck measurement down from point D. Mark the endpoint V. Measure the same distance minus 1cm to the left of point D. Mark this point W. Draw in the neck curve between points V and W.

Step 15: Draw a short, 2cm line down from point U. Mark the end point X. Draw another line from X to the right about halfway to Line CD.

Step 16: Measure the line SU. Add 0.5cm to that measurement and record that amount. Pivot your ruler around on point W until it intersects with the horizontal line X at the distance you just recorded. Connect the two points and mark this intersection point Y.

Step 17: Connect Points Y and L with a straight line. Draw this line in lightly, you’ll be erasing it in just a little bit.

Step 18: Construct the Armscye by connecting points U, Q, M, L, and Y with a curved line. Make sure that the curve stays within 1.25cm of line LY, within 1.75cm of point K, and within 3 cm from point I.

Step 19: Erase all extraneous lines, leaving only the outer lines, the armscye line, the waistline and the center line MO. You should have something that looks like this:

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