I hope someone can help me answer this question. Regarding clipping and notching, which method applies to convex curves and which applies to concave curves? I have done extensive research using my library of sewing books as well as my sewing magazines. I have also spent a considerable amount of time on the Internet. To my surprise the results seem to be split 50/50. Some state that notching is done on convex curves and some say it is done on concave curves. The same is true with clipping. Is there one correct method? I plan to post this information on a new sewing web site that I am in the process of developing – I do not want to post incorrect information. I would appreciate any input. (FYI – The new Reader’s Digest Complete Guide to Sewing states in one section that notching is done on convex curves but in another section it states that notching is done on concave curves (see pgs 87 and 372), and vice versa for clipping (see pgs. 87 and 370). Obviously this is an error in the book).