10 TIps for Router Aluminum Cutting 2015-01-02

Really interesting read, which has made me have a couple of questions...

1) At what point is a lubricant spray required? In the Tips it mentions that it is more or less a given, but in the videos of the C-beam machine there is just a bit of kerosene hand-applied. Will kerosene always be sufficient with fine cuts?

2) A blower is recommended to clear chips, and yet looking through the forums here, most people don't even have dust extraction, let alone a shoe or a precision blower. How critical is this in reality?

Thanks!