Tool recommendation for chassis cutting

[Tubetec]

Ive run into a few workmates along the way with digits missing too , one guy lost a finger to a circular saw , then thought himself the play the guitar other way round before lopping off another finger on the other hand , was game over after that and he gave up the guitar , poor guy welled up with tears telling me the story , not so much for the loss of the finger but the loss of expression musically .