I have been in the texitle business for over thirty years, I'm probably a wealth of knowledge when it comes to fabrics and wellcome all questions. I also own a scissor distributorship and a sharpening service. If anyone needs advice concerning the proper care, usage, how and when to sharpen your scissors and shears, please contact me. I'll be happy to explain to you the manner in which your scissors should be sharpened. What you should expect from a professonal sharpener since these can be an expensive investment.