Originally Posted by virtualbernie
I think either your log cabin blocks are not all the same size :
I think this might be the case as well. Do you measure each block as you go? This can also help with matching up those sashing cornerstones. If your blocks are of unequal dimensions this will make matching up the sashing to them near impossible. With blocks a tad to big you can sometimes ease them to fit your sashing but if the blocks are too small you can maybe stretch them by blocking another 1/8" or so. anything much more then that can cause problems for you.