Re: [CAD_CAM_EDM_DRO] Re: Any "Best Practice" Recommendations for clearing chips and feed/speed when

also a powdered aluminum slurry is the main ingredient in
the BLU-82, or daisy-cutter, bomb
a small bursting charge spreads a fuel/air mixture over the
target and an ignition charge acts as a spark plug
= instant one acre cylinder head!

milling or turning chips will be way too big to ignite like this
but grinding dust is just fine enough to light up

Brian

On Monday 24 December 2001 11:02, you wrote:
> Hi Marcus,
>
> Reminds me! Powdered aluminum and sulfur are used for a propellant in
> amateur rockets!
>
> Marcus & Eva wrote:
> > Hi All:
> > There was a note in a recent issue of "Model Engineers Workshop"
> > where a fellow described sustaining serious burns from combustion of
> > aluminum and steel grinding residue.
> > He apparently was grinding steel on an abrasive belt machine that had
> > previously been used to grind aluminum rivets to length, and was blasted
> > with a substantial fireball when the mixture ignited.
> > I guess the sparks from the steel were sufficient to set the mixture off.
> > I have frequently had the grinding residue from my surface grinder begin
> > to smoulder inside the guard. Very stinky!!
> > Cheers
> >
> > Marcus