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On this page
  • Snowballed Block Unit in PreQuilt
  • YouTube Video
  • Help Guide
  • Alternative Snowballed Corner
  • Sewing Construction Diagrams
  • 1 at a Time - Snowball Method
  1. PREQUILT 101
  2. Build a Block Unit for Auto Recognition
  3. Rectangular Units

Snowballed Corner

Best Practices for Auto Recognition

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Last updated 4 months ago

Snowballed Block Unit in PreQuilt

A Snowballed Corner can be created in PreQuilt just like it is in real life when you're sewing it. Generally these snowballed triangle corners are on top of a square or rectangle.

Unlike some of the other Block Unit help guides, this one will focus only on creating a snowballed corner rectangle block unit.


YouTube Video

Coming soon...


Help Guide

  1. Click on the BLOCKS tab on the left side control panel.

  2. Click on the Make Custom Block button.

  3. The Block Editor panel will slide out and overtake your screen. My block is set to 12" x 6" finished, but it doesn't matter, the next steps will work for all sized blocks.

  4. Set your grid guidelines by changing the number for the horizontal and vertical units.

    • Since I'm going to be creating a rectangular quilt block, I'll set my gridlines to 2 horizontal and 1 vertical unit.

  5. This will enlarge the square to fill the entire space of the rectangle.

  6. Click on the Link button for a different fabric link (so that there are now 2 different fabrics being used). In this example, I am using Fabric Link B.

  7. Move the half square triangle piece into the bottom left corner of the rectangle. It should cover the square.

  8. You now have a snowballed corner on a rectangle.

Alternative Snowballed Corner

Unlike the example in the first Help Guide, sometimes the snowballed corner does not extend to the full height or width of the rectangle or square.

Follow these instructions for creating a snowballed corner that is not the full height or width.

  1. Click on the BLOCKS tab on the left side control panel.

  2. Click on the Make Custom Block button.

  3. The Block Editor panel will slide out and overtake your screen. My block is set to 12" x 6" finished, but it doesn't matter, the next steps will work for all sized blocks.

  4. Set your grid guidelines by changing the number for the horizontal and vertical units.

    • Since I'm going to be creating a rectangular quilt block with the snowballed corner being half the height and ¼ of the width, I'll set my gridlines to 4 horizontal and 2 vertical unit.

  5. This will enlarge the square to fill the entire space of the rectangle.

  6. Click on the Link button for a different fabric link (so that there are now 2 different fabrics being used). In this example, I am using Fabric Link B.

  7. Move the half square triangle piece into the top left corner of the rectangle. It should cover the square.

  8. You now have a snowballed corner on a rectangle.


Sewing Construction Diagrams

1 at a Time - Snowball Method

Coming soon

Click on the square shape () from the central control panel.

Click on the Size to Fit button () on the central, vertical toolbar.

Click on the half square triangle shape () from the central control panel. (It might camouflage in with the rectangle behind it. You can see that there is a square bounding box for the triangle).

Click on the Rotate button () on the central control panel so that it is in the correct orientation.

Click on the square shape () from the central control panel.

Click on the Size to Fit button () on the central, vertical toolbar.

Click on the half square triangle shape () from the central control panel. (It might camouflage in with the rectangle behind it. You can see that there is a square bounding box for the triangle).

Click on the Rotate button () on the central control panel so that it is in the correct orientation.

Snowballed Triangle Corner Rectangle Block Unit