Math Help? (Cutting Sizes for a Block)
#1
1) So, I want to make the following block for a swap (Sorta, these are NOT the colors I want to use, but easily identifiable colors) - It needs to finish at 12 1/2 inches (so when my partner uses in her quilt it will be 12 inches finished.
How do I cut each of the pieces? (I suck SOOOO bad at math!)
2) IF I were to make an entire quilt of this block, using charm squares, how big would the pinwheel blocks need to be?
Now that I think about, I'm sure theres a pattern for this block already on the internet somewhere...
hmmmmmm
How do I cut each of the pieces? (I suck SOOOO bad at math!)
2) IF I were to make an entire quilt of this block, using charm squares, how big would the pinwheel blocks need to be?
Now that I think about, I'm sure theres a pattern for this block already on the internet somewhere...
hmmmmmm
#2
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Join Date: Dec 2010
Location: New York City/Manhattan
Posts: 1,316
cut the yellow blocks to 6-1/2 inches. the size of the finished triangle blocks, which you will need 8 of for the whole block need to be3-1/2" unfinished. I like to piece my half square triangles larger then trim down, so i would likely cut 4-1/2" squares,mark a line diagonally, sew 1/4" to each side of this line, then press and cut down. is that clear as mud?
#3
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Join Date: Mar 2009
Posts: 15,639
6 1/2' to start for the yellow squares and 3 1/2" EACH for the pinwheel block.
When you sew the pinwheel blocks together you have 3.5+3.5 = 7 -.5 (seam allowance) = 6.5 Do that twice for each square.
To assemble: 6.5 (pinwheel block)+ 6.5 (plain block) = 13 - .5 (seam allowance) = 12.5
When you sew the pinwheel blocks together you have 3.5+3.5 = 7 -.5 (seam allowance) = 6.5 Do that twice for each square.
To assemble: 6.5 (pinwheel block)+ 6.5 (plain block) = 13 - .5 (seam allowance) = 12.5
#5
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Join Date: Mar 2009
Posts: 15,639
Originally Posted by sewwhat85
the plain blocks will be cut 3 1/2 and cut two blue two purple at 3 7/8 draw line diagonal and sew 1/4 inch on each side of line cut on line
#6
Originally Posted by sewwhat85
the plain blocks will be cut 3 1/2 and cut two blue two purple at 3 7/8 draw line diagonal and sew 1/4 inch on each side of line cut on line
http://www.3dquilt.me.uk/homepagefil...gTriangles.htm
#7
Answer to #2. If you use charm squares, the yellow would be 5" cut and 4 1/2" finished. Then the 1/2 square triangles that make up the pinwheel square would finish at 2 1/4" each. You would need to cut the charm square down to 3 1/4 each or just sew the diagonal 1/4 each on each side and trim finished blocks to 2 3/4". You will have a lot of waste if you just use charm squares. If you use the charm squares whole for the pinwheels, measure you finished block and cut the yellow the same size.
#9
6 1/2 inch for the yellow squares 7inch squares of 2 colors placed right sides together, sew 1/4 inch seam around all 4 sides. Then cut from corner to corner both ways that will make the 4 squares for the pinwheel block, turn them to make the pinwheel block , sew together square up to 6 1/2 inches
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