I do not know how much I cut with an angle grinder in walls and separated metal. Anyway, he is not going to get broken. With prolonged use, although it is really hot, but the functionality does until now (4 months more or less continuous use) no harm. The service also works perfectly with one hand. Only the Schutzblecharretierung led me initially to brood - this is not worth a deduction but. Therefore, 5 stars.