quiltingnd

I'm needing a bit of help. I have some sampler blocks (some from the BOM here on the board) that I want to set on point and make a lap quilt with.



The squares unfinished are 12 1/2". I want to set them on point and then cut two fabrics and sew into strips and then cut my setting triangles and corner triangles out of it. But I have no idea what the finished width my strip sets should be or what angle to cut the setting triangles? A qb member (I'm sorry I'm not sure who.) had posted this amazing quilt and I'm using it as inspiration.

ckcowl

Ok-here is the formulas for on point settings. We will start with the (4)corners.
Finished block size divided by 1.414 (round up) plus 7/8".
Example using your 12" (finished size) blocks...
12" ÷ 1.141= 8.486 (round up) = 8 1/2"
8 1/2" + 7/8"= 9 3/8" which in the size you would cut (2) squares; cut in half diagonally for (4) corner triangles.
Now, for the side setting triangles...
Formula-- finished block size (times -multiply by) 1.414 (round up)+ 1 1/4". Cut diagonally twice X so you need one square for every (4)side setting triangles... Here's the example again with your 12" blocks:
12" X 1.414 = 16.96 (round up) 17"
17" + 1 1/4"=18 1/4"
Cut diagonally twice X

Visit (quiltville.com or about.quilting.com ) for free math calculations charts

dunster

I hate to throw more worries at you, but you may have a problem trying to use exactly 12 blocks (which are lovely, by the way). But if you add another block you could have an on-point layout of 3/2/3/2/3.

Also ckcowl's directions are for the size of squares, with the setting triangles cut by cutting the diagonal of the square twice, so it doesn't quite work for the strip sets you are envisioning. You could accomplish your goal with strip sets, but you would be better off (waste less fabric) if you construct a square of the size she suggests, putting one fabric in the center of that square. Then when you cut your 4 setting triangles from the square the same fabric will be at the inside point of each of the setting triangles. For the corner triangles I would not worry about the second fabric but just use the outside fabric used in the setting triangles, as in your beautiful example picture above. (And I agree, that quilt is spectacular.)

Nammie to 7

There is always someone who comes to the rescue for calculations! They even make sense to me!! Your quilt will be beautiful. The inspiration quilt is stunning!