Proper name for this block and help with math
#16
#17
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Join Date: Nov 2012
Location: Durango CO
Posts: 1,244
#18
glad it was helpful
#19
Super Member
Join Date: Mar 2011
Location: Pratt Kansas
Posts: 1,222
You know how pi is 3.14....?
For quilters, it is "cake is 1.414"
It works both directions. Just Divide or multiply
8" finished divided by 1.414 divided again, the center sq is 4.0 finished and some eensy change, so would need to be cut 4-1/2".
The middle square is 5.65, slightly larger than 5-5/8. You could cut two 6-1/4 sq in half for the middle corners.
The outer corners are half of 8, so are 4" plus SA. Cut 4-1/2" HST or cut two 5" sq in half.
For quilters, it is "cake is 1.414"
It works both directions. Just Divide or multiply
8" finished divided by 1.414 divided again, the center sq is 4.0 finished and some eensy change, so would need to be cut 4-1/2".
The middle square is 5.65, slightly larger than 5-5/8. You could cut two 6-1/4 sq in half for the middle corners.
The outer corners are half of 8, so are 4" plus SA. Cut 4-1/2" HST or cut two 5" sq in half.
#20
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Join Date: May 2008
Location: MN
Posts: 24,659
Center A - 4-1/2 x 4-1/2 (4.5 x 4.5 inches)
Square to cut into into fourths to make B pieces - 5-1/4 x 5-1/4 (5.25 x 5.25 inches)
Square to cut diagonally to make C pieces - 4-7/8 x 4-7/8 (4.875 x 4.875 inches)
What I would actually cut for that block/unit (in inches):
A: 4-1/2 x 4-1/2
B: 5-1/2 x 5-1/2
C: 5 x 5
And then trim/square the unit/block after adding all the B pieces, and then trim/square after adding the C pieces.
I strongly recommend making at least one test block before cutting up a lot of your pieces - measure it - and then make adjustments for the next block.
For me, it has been much more economical - and less frustrating - to cut a bit large and trim a smidgen than to end up with s skimpy unit.
Last edited by bearisgray; 08-26-2016 at 03:11 AM.
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