Perfect Half-Square Triangles — A Comparison


Last week, I sampled two programs for making half-square triangles — Triangulations and Ta Da Triangles. I worked with them over the weekend to determine which was my favorite. Ummm … I’m not really ready to declare a winner. I love that Triangulations is incredibly flexible; but I hate picking off the paper. Ta Da Triangles is less flexible and more expensive if you’re making a lot of triangles, but the interfacing does not need to be removed and that’s a big plus! Here’s my synppsis of the differences and I’ll let you make up your own mind.

Triangulations (Available at


  • Very flexible. You can make squares in 1/16″ increments.
  • Easy. Just print off the appropriate size triangle.
  • Cheaper in the long run. You buy the program once and can make as many copies as you want.
  • Simpler to sew. There is no stopping and starting — just follow the arrows and your needle is down for the entire page.
  • Triangles fit easily on 8.5 x 11 inch printer paper.
  • No further trimming is required.


  • Requires purchasing paper that is especially for paper piecing.
  • Have to pick off the paper once you’ve sewn, which is time consuming.
  • Requires a computer and printer.
  • More likely to dull the needle, since it is sewing through paper.

Ta Da Triangles (Available at


  • Interfacing is easy to sew on.
  • Does not dull the needle.
  • Interfacing remains on the triangle and stabilizes the triangle.
  • Does not require a computer.


  • Only makes limited sizes of triangles in 1/4″ increments.
  • Must plan project and purchase the correct sizes of Ta Da triangles.
  • The interfacing is on large sheets which is cumbersome.
  • Leaves dog-ears to be trimmed.

2 responses »

  1. to get the best of both worlds. I have used triangulations but instead of printing onto paper, I ironed fabric cut to paper size onto freezer paper and printed directly onto the wrong side of the fabric. and then there is no peeling off paper.. It is a bit tricky to get the freezer/paper combo thru the printer reliably and I found if I ironed a second little strip of freezer paper about 2 inches wide at the top it was stiff enough to make the first “bend” in the printer.

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