Block (or Sloper)

A simple master pattern that is used to make more detailed patterns.

Blocks generally have no design features other than what is required for fitting. A Block is usually made from a thin cardboard, not paper, so that the patternmaker can trace around it to create patterns.  The term "Block" is more commonly used in Australia and the UK, while the term "Sloper" is used in the United States.

The Basic Block or Sloper Set consists of seven pieces: Bodice Front, Bodice Back, Sleeve, Skirt Front, Skirt Back, Pants Front and Pants Back.  See the images below an example of each of these.

Examples

example of bodice block, front and back

Image 1: Bodice Blocks

An example of a Bodice Block set:  Front and Back. 

This Front Bodice has darts in the side seam and waist, but other Bodice Blocks may have the darts in the shoulder seam and waist, or a single dart in the waist.


example of a sleeve block

Image 2: Sleeve Block

An Example of a Sleeve Block.

This is a Fitted Sleeve Block as it has a dart in the elbow. Other  Sleeve Block options include the two-piece Sleeve Block, which has a seamline under the arm, and the basic Sleeve Block with no dart/curve at the elbow.


example of skirt block: front and back

Image 3: Skirt Blocks

An example of a Skirt Block set: Front & Back.

This Skirt Block as two darts in the front and two darts in the back.  Other Skirt Blocks may have one dart in the front and the back, or two in the back and one in the front.


example of pants block: front and back

Image 4: Pants Blocks

An example of a Pants Block set: Front and Back.

These Pants Blocks have two darts in the back and one in the front.  Other Pants Blocks may have two darts in both the front and the back.  The shape of the leg may also differ.

Other Blocks

You can have many more Blocks such as Jeans, Torso, Extended Line Dress, Jacket, Overgarment, Shirt., etc.  Some blocks are made from scratch (examples are the basic blocks: Bodice, Sleeve, Skirt), others are made from an existing Block.


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