3 ms·

The inside of those machines are far, far cleaner than the inside of any clean room ever entered by a human. They have to be molecularly clean.

• b3orn 8mo ago
  Which isn't easy considering they explode tin droplets in the machine. I think that's the point the other commenter wanted to make.
  • jacquesm 8mo ago
    Think about the purity requirements that places on the tin.