I've found that the teachers for every class I've gone to always has some type of new foot you can/would like to/need to/MUST buy. Some I've bought, some I haven't. I also make sure that the dealer will discount them due to the class..etc.
Those little babies can sure get expensive and to tell the truth, I'll still end up with a quilt...same as I did when I was using my antique Singer :oops:
The "scant" 1/4 " seam is a couple of threads more narrow that the regular 1/4" seam. Some directions will call for this. The reason your blocks need to be consistant and measure the correct size is that as you grow with your quilting, you will begin to combine blocks...they won't fit together very well if your seams don't match....ask me how I know this :oops: :oops: