Chainsaw Repair

Before using muriatic acid, I use a cordless chain grinder at low speed to grind down the bigger blobs of aluminum.
The grinding stones dont wear out the chrome of the cylinder. The job is so much simpler and fast because  this kind of grinder can be used like a mechanical eraser to 'erase' the aluminum.
90% of the time after the grinder, muriatic acid is no longer required. Just a final touch with a very fine emery.