I'd think they might be a little loud since they are grinding/sharpening on metal. Maybe I could use it in DH's shop. I'm sure there would also be the metal shavings/dust deposits and wouldn't want that in my sewing room either. I'm sure the blades would also have to cleaned or wiped off some so you wouldn't get oil and that black residue on your fabric.....but if they work well, it might be worth putting up with those inconviences????