PLUS a little "Quilter's Math"
To determine the size of squares you'll need to cut for
Eight INSTANT HALF-SQUARE TRIANGLES = (FS + 1") x 2
(Desired FINISHED SIZE + 1 inch) x 2 = Cut 2 squares
HALF-SQUARE TRIANGLES
1) DRAW an "X" on the wrong side of the lighter fabric.
3) STITCH on both sides of each line.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDB0Gbo5ZxUK_YkcZ7D68jOTy1c27ojxCLhOs-dbgmQHoXoskr3KSWiE220quoeYBHgMoCLooEASdO4bn08fpmhtcMZB3wEel4gsYmsE65NugUXQuw3gUBBat9NKPg_9MJQznppGNegGg/w640-h590/HST-2+b.jpg)
4) CUT vertically, horizontally +, then diagonally x.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgv2eDdGTVtktgVkQYsOlDHhPFY7A12D33-3RiuTtk-PjKUqnCTYN1y_px8U9ZciNePMJV7UQMAQFruqlMOsfKVpy8KNrRvBBhCpj2xohvAYPGqINIEXZVqHvRSlb2XBTbkiR8nQIyrl0k/w640-h630/HST-2+d.jpg)
TRIM, PRESS. YIELD: 8 Half-Square Triangles
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjDM4yZlMwzb4K-LYtV_CNPoI6-9X7gPdr0TcNQ7I_FbRhA7Lfgt7Ux8E3xF3lIVVX8sOG1gMXdcYY73OfsF__zVsDXRr2gG3reGrqU9tEiPjGIC0B3Lfd-3UOV8dTW60knJYTbTcWnJeU/w640-h397/100_2292.jpg)
~~~
To determine the size of squares you'll need to cut for
Eight INSTANT QUARTER-SQUARE TRIANGLES = (FS + 1.5") x 2
(Desired FINISHED SIZE + 1-1/2 inches) x 2 = Cut 2 squares
QUARTER-SQUARE TRIANGLES
Follow steps 1 through 4 as diagrammed above, then press HSTs open
with seam allowance toward the darker fabric. Continue as follows:
Use two Half-Square Triangles.
1) DRAW a diagonal line on the back of one of the HSTs,
perpendicular to the stitching line.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPhD8nLvQrns03tgaONxdqtrdpTa9jad7PHMGP_M2ACQ7CYLrH5PAqFYJGSvhyphenhyphenUunUWhw1FzlIurcR3hlPggS1hYjMjbDmhqJ9KJj6lKiwvVyaGUbi9Q67v5-8PK-gsjvSGJ07i07jsJc/w495-h411/QST+a.jpg)
2) LAYER two HSTs together, abutting the seam.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0O4O2VL-sbqNhSktiM-Mcz-Vw90tyuik3VrojLUtlSnaNn_xEaBTjCpArCASC1wrnnJN1i8-DsZafhzjoL9JrKiydrd_87luER6cMex7GvxUg7SDbFaDidQoBJP5kN9btIg8Y814u1LY/w493-h379/QST+b.jpg)
3) STITCH on both sides of the line.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhOzj2X5Khv6BROVBKO-NX2uqN9Jsb4I4WEdLEVVTV_niLjv3wCogdXsNVI5xc7zhyl_mLRmmSyQV6aIX8ehjmPVX5EgyijJiNaDpf1s6Nd-6PEqDQUigYWIhbCiAsaMkMnZ_mLotkyw9I/w384-h400/QST+c.jpg)
4) CUT on the drawn line.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgiQNLaq8PwDzBbE-PkYMY0DhyPHZVmQiYu5P-IOiB2bM_-m4E1BtKks-Pe3N0mqKRIp3uAnnffxo-nQAqPKgh9PfCsIKWOtEOwpRKArqy8okQLGJSObGb3mZrcrvSR2WZPp2G55C4htTU/w626-h640/QST+d.jpg)
YIELD: 2 QSTs
perpendicular to the stitching line.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPhD8nLvQrns03tgaONxdqtrdpTa9jad7PHMGP_M2ACQ7CYLrH5PAqFYJGSvhyphenhyphenUunUWhw1FzlIurcR3hlPggS1hYjMjbDmhqJ9KJj6lKiwvVyaGUbi9Q67v5-8PK-gsjvSGJ07i07jsJc/w495-h411/QST+a.jpg)
2) LAYER two HSTs together, abutting the seam.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0O4O2VL-sbqNhSktiM-Mcz-Vw90tyuik3VrojLUtlSnaNn_xEaBTjCpArCASC1wrnnJN1i8-DsZafhzjoL9JrKiydrd_87luER6cMex7GvxUg7SDbFaDidQoBJP5kN9btIg8Y814u1LY/w493-h379/QST+b.jpg)
3) STITCH on both sides of the line.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhOzj2X5Khv6BROVBKO-NX2uqN9Jsb4I4WEdLEVVTV_niLjv3wCogdXsNVI5xc7zhyl_mLRmmSyQV6aIX8ehjmPVX5EgyijJiNaDpf1s6Nd-6PEqDQUigYWIhbCiAsaMkMnZ_mLotkyw9I/w384-h400/QST+c.jpg)
4) CUT on the drawn line.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgiQNLaq8PwDzBbE-PkYMY0DhyPHZVmQiYu5P-IOiB2bM_-m4E1BtKks-Pe3N0mqKRIp3uAnnffxo-nQAqPKgh9PfCsIKWOtEOwpRKArqy8okQLGJSObGb3mZrcrvSR2WZPp2G55C4htTU/w626-h640/QST+d.jpg)
YIELD: 2 QSTs
REPEAT with each set. One batch of Matic 8 HSTs will also
YIELD 8 Quarter-Square Triangles. The Ohio Star block uses 4 QSTs.
YIELD 8 Quarter-Square Triangles. The Ohio Star block uses 4 QSTs.
Happy Quilting!
Nice tutorial. The look wonderful in the block.
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