Originally Posted by moonwork42029
I have books of 6" patterns and would love to make them bigger too.
To resize most blocks, look to see if it's a 4-patch, 9-patch, 16-patch, 25-patch, or 49-patch. Sometimes the patches are pieced themselves (like a HST making up one patch) and sometimes a single piece of fabric covers multiple patches (like in a Bear's Paw).
Most blocks like to use friendly sizes for the patches, so that gives you a hint about what type of ?-patch it may be. For example, 25 patch blocks tend to finish at a multiple of 5 (5", 10", 15", etc.). 49-patches tend to finish at a multiple of 7 (so 7", 14", 21"). 9-patches tend to finish in multiples of 3 (3", 6", 9", 12", 15", 18", 21", etc.) 16-patches tend to finish in multiples of 4 (4", 8", 12", 16", 20", 24", etc.) 4-patches tend to finish in multiples of 2 (2", 4", 6", 8", 10", 12", 14", 16", etc.)
If you can ID what type of patch it is and know the "patch size" for that type for the new block size, it is very easy to adjust.