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How to increase and decrease in Tunisian crochet

There are several ways to increase and decrease the number of stitches in Tunisian crochet. Consequently, a good pattern designer should define and describe which type of increase or decrease they are using in their design. If you are not following a pattern, you should explore the various ways that exist to increase and decrease as they each exhibit particular differences in their execution and the resulting look of the design. Here are a few to explore so you can create the look you want.

A standard decrease is actually quite simple. In the Forward Pass, we simply insert the hook under the next 2 vertical bars and pull up a loop. This technique can easily be done with both the Tunisian Simple Stitch and the Tunisian Purl Stitch. See here the typical TSS decrease.

The ways to increase in Tunisian crochet are more numerous. Again, if you are following a pattern, the instructions to do an increase should be stated. Each creates a differnt look so it is important to know which increse works best for you.

These are some of the typical increases we can see:

  • We can make a Tunisian Full Stitch (TFS) where needed. This usually results in a small gap within the fabric. (See the TFS increase here)
  • We can work in the horizontal bar (or the RetP of the previous row) by either inserting the hook in the front loop or the backbump. These two techniques are especially convenient for a more seamless and flat work when working with the Tunisian Simple Stitch. (See here)
  • By yarn over or yarn under. (See how to here)
  • Working a combination of stitches in the same stitch is another way to make increases. This technique is especially useful when working in the round, and when wanting to make a square or some shape that requires straight angles. Using a combination of the Tunisian Simple Stitch and the Tunisian Knit Stitch in same stitch (see here), and the Twisted Tunisian Simple Stitch and the Tunisian Knit Stitch in same stitch (see here), are very efficient ways to create angles and corners.