FAQ

Harmonic Convergence Calculator

These quilts are supposed to be somewhat spontaneous and a surprise, but I don’t want to completely surprised by how large or small the final convergence turns out to be.

These lists show the finished width of a convergence based on a starting strip size & the size of the increase for each strip. The “normal” one on the left starts with 1 inch and increases by a half inch. The “miniature” one starts with 3-quarter inch and increases only by a quarter inch.

They are cumulative… cut as many strips as desired starting from the top of the list.

  • Fabric Size:  required width of fabric needed to make a convergence using all the rows from top to this one.
  • Strip Cut Size: size of each successive cut strip
  • Converged width: the final finished size of a convergence of 2 fabrics using all the rows from 1 to this one
Normal Miniature
Fabric size strip cut size converged width Fabric size strip cut size converged width
1 1 1 1.5 0.75 0.5
2.5 1.5 3 2.5 1 1.5
4.5 2 6 3.75 1.25 3
7 2.5 10 5.25 1.5 5
10 3 15 7 1.75 7.5
13.5 3.5 21 9 2 10.5
17.5 4 28 11.25 2.25 14
22 4.5 36 13.75 2.5 18
27 5 45 16.5 2.75 22.5
32.5 5.5 55 19.5 3 27.5
38.5 6 66 22.75 3.25 33

Don’t forget to leave a final piece of fabric AT LEAST as width as your last cut strip.

If you need more information to know what this is all about; Ricky Tims is the man! Here’s his gallery

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