I was hoping this topic would come up again. I have found that the best seam ripper is a disposable surgical blade. I ordered a full box of #12 blades, they have a curve at the tip, I also have #11 blades, those are like the blade on an exacto knife; nice and thin, cheap enough that if the blade breaks you can take out another one. I ordered mine from a medical supply company that sells to the general public so long as it is a non prescription item. Another option is to talk with a surgery center if you have one near you, even a hospital, they may sell you one or two. I truly appreciate all I have learned from you guys, am awed by the beautiful work you do and share.