My go to WeCheer for sanding/carving has finally gone belly up. The armiture that contacts the brushes has worn down to the point that the brushes do not make a complete contact thus throwing sparks like a sparkler, well at least it did. I have e-mailed WeCheer in Tiawan. Good luck on that one. I want to find out if I can buy a new armiture/cost. Has anyone had the same problem and what was your solution......buy a new one? Thanks