link1896
Mr Greenfield
Did the same thing with the angle grinder a few years ago. Was modifying a bike rack for a month-long road trip at 2am the morning of our departure. Deliriously tired I start grinding away, getting righteously vicious on the offending plate. 15min later I stand up to realise all of the sparks & hot metal shmeg has been blasting up the passenger side window of my girlfriend's car. Definitely felt like a complete fuckwit. $460 later. She hears the grinder start these days & she comes running...can't blame her.
Also have ballsed up, ignoring hot sparks from the angle grinder.
Had just retiled the laundry, was trimming the pipe fitting for new taps and burnt the wall tiles from floor to ceiling. Had no other option but to retile that wall.