June Mini Madness 2021 - Block 17

Before we start todays block I need to correct an error in the cutting instructions for block 16.  Here are the corrected instructions:

For a 4 inch block, cut two 1 7/8 inch squares light, three 1 7/8 inch squares medium and five 1 7/8 inch squares dark (cut in half diagonally) Cut four 1 ½ inch squares of dark and two 1 ½ inch squares background.

For 6 inch block, cut two 2 3/8 inch squares light, three 2 3/8 inch squares medium ad five 2 3/8 inch squares dark (cut in half diagonally).  Cut four 2 inch squares dark and two 2 inch squares of background.

My apologies for that error!

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Today's block is all about the triangles - sixteen of them as a matter of fact!  This block is called Triangle Mosaic and is made with only half square triangle units, so you'll have to make them accurately.  I'm going to use the Magic 8 method of making the triangles for this, but you can make them any way you would like to - for the 4 inch block each triangle needs to measure 1 1/2 inches and for the 6 inch block each one needs to measure 2 inches.

Cutting for traditional half square triangles:

For 4 inch block, cut eight 1 7/8 inch squares of white and medium fabric – cut in half diagonally.

For 6 inch block, cut eight 2 3/8 inch squares of white and medium fabric – cut in half diagonally.

Sew triangles together with a 1/4 inch seam, then arrange and sew together to complete block.

If you would like to try the Magic 8 method for sewing your triangles you will need two squares each of your medium and background fabric that are 3 3/4 for the 4 inch blocks, and 4 3/4 inches for the 6 inch blocks.

Draw a diagonal line going in both directions on the back of the background squares.  Layer right sides together with medium fabric squares.

Sew a seam 1/4 of an inch on each side of both lines.  The next step is easier if you have a rotating mat, but is fairly easily done on a stationary mat as well if you are careful.  First you want to cut your sewn square in half both ways parallel to the edges. (1 7/8 inches from the edge of the 4 inch block, and 2 3/8 inches from the edge of the 6 inch block)  Keep everything lined up and cut on the diagonal lines you drew, ending up with eight sewn half square triangle units per square.  

I was really happy to find that my triangles all measured up pretty well!  I had to trim just a sliver off a couple of them, but overall they were very accurate!  

Press the seams toward the medium fabric and trim off dog ears, checking to see that the triangles all measure 1 1/2 (2) inches.

Arrange the blocks so all the triangles are facing the same direction and sew together to complete the block.

I promise there won't be triangles in tomorrow's block :)  Have a wonderful day!