This tool will remove only small amounts of material. Small amounts of Plexiglas may be removed, but it will soften from the heat and flat edges will be rounded. Wire wheels may remove rust or buff metal surfaces. Cloth wheels, used with the right buffing compound, can polish metal. Small objects may be kicked out of your hand or become too hot to hold while being ground.
Eye protection is mandatory.
Apply force to the material being worked slowly to eliminate the possibility of nicking or breaking the grinding wheel. Soft materials and aluminum may not be worked with the grinder. For straight cuts in thin metal, Formica, circuit board material, etc. Be careful the shear handle doesn't hit your head. Hardened steel or any material greater than 16 gauge may not be cut with this tool.