Originally Posted by crazyrvquilter
If you are making all the blocks for yourself, then you can use any size seam you like BUT if you are swapping blocks, PLEASE use a scant quarter inch seam. I have participated in swaps where some of the blocks were unusable because they were much too small. Sewing that scant quarter inch was a real challenge for me but I am happy that I have come closer to mastering it.
I like the answer from the member who said that she doesn't participate in swaps where a scant 1/4" is required. Smart approach.
Unfortunately, not every block is marked as such and sometimes you don't realize that you can't get to the right size unless you change it up. That's when some people (and yes, I have seen some too) just use their own measurement. Sometimes they can be salvaged, but sometimes those blocks are just a major waste of someone's time.