You need to subtract the seam allowance, double what's left and add the seam allowance back. Straight forward when dealing w/ squares / rectangles but quite obnoxious when dealing w/ triangles. I generally draw it out as was mentioned and measure when dealing w/ angles.
Originally Posted by
Watson
I want to enlarge a 6 1/2" block to a 12 1/2" block.
I know how to actually enlarge the picture of the block but how do you figure out how to make the sizes of all the pieces?
As an example the 6 1/2" block calls for a 1 1/2 x 2 1/2" strip..... does that just become a strip 3x5"?
Watson