Onebyone

You need a Proportional scale. i don't think increasing by percentage will be accurate. Close enough for a quilt block though.

SueZQ from MN

It's a beautiful block. Thanks for sharing with us.

ibex94

So just to brush off my brain cells....

26/12 = 2.1667 so all your measurements would have to be multiplied by 2.1667 to give you a 26" block. Much easier to multiply by 2 and add that 1" sashing, right?

Or am I wrong about multiplying each measurement by 2.1667?

If you had a 26" block and wanted to shrink it down to 12" you would divide 12 by 26 to get your multiplier for the sides..... I think.

cjsews

You need to increase the finished size of each piece and then add back they seam allowances Beautiful block

RN-Quilter

Thank you all for your input....I will double the sizes on the pattern as suggested. Have a wonderful day!💕💕💕

DebLuvsQuiltng

be sure to consider seam allowances. A double size block still has only one seam!! A 2.5 inch block will be 4.5 since finished is 2 inches, double to 4, then add seams. And border would indeed be 1 1/2 inch strips to finish at 1 inch on all sides.

ibex94

DebLuvs and CJ -- it is not a straightforwards multiplication of the 2.5 block measurements. Yikes! Thank you! My method would take a 2.5 in measurement andupsize it to a 5.something square so ultimately it would be much bigger than 26 inches. Time to do some more brain dusting! What a great brain teaser! Double the size of the finished block then add seam allowances. Good thing I have never tried to change the size of a pattern.

quiltsfor

The .5 is the seam allowance (.25 around each edge of the block) if you are just doubling the pattern, you would only double the first number. A 2.5 block doubled becomes a 4.5 block. A 4.5 block doubled, becomes an 8.5 block, doubling the 8.5 block becomes a 16.5 block and so on.

Note: I'm just showing the math to double a block.