This tool is poorly designed: the maintenance of drill (plastic, badly trimmed) is too soft and does not allow a straight line maintaining a groove cutter (tried on pine wood - yet gentle - with the tungsten carbide bur 3.2 mm Dremel 9903). After attempting to groove to a depth of 4 mm and a length of about 10 cm, the result is more disappointing with a zigzag groove instead of a straight line. I can not imagine even a groove hardwood, see metal, even as soft aluminum ...
Moreover, the instructions, although it is thick - see all the updates also keeps many useless on the use of a portable electronic device - does not even explain how to attach the drill to the support.
In short, it's a purchase I regret and do not recommend anyone, or so for the model in polystyrene ... And more ...
