Re: ATM Grinding Wet is NOT OK!

[immorta <immorta@chariot.net.au>]

> You guys are scaring me.  Now I'm grinding less, worrying more.
> 
> Are you talking about dust I can see and smell -- really letting it get
> airborne like the dust you see at the shipyard when they are sandblasting?
> Or if I inhale a single partical could I be a gonner?
> 
> And how long until I'd know?
> 
> I am a worrier from way back.

Well a particle on its own may be too small to see unless theres lots of
them close together, some particles are bigger.
Its all bad stuff, but the single particle you inhale has to make it to
your lungs (not as easy as you might think), and then it has to have some
type of damaging effect, probably not going to happen every time.

The more particles in the air, the more you inhale, the more make it
to your lungs, the greater the opportunity for damage.

I don't think you would breathe much in if you were wet grinding a scope
mirror by hand. Dry grinding of course would put a lot of glass in the air,
and using a diamond saw or something like a grinding wheel even with water,
will create aerosols that may contain glass that might be inhaled.


Personally I wouldn't worry too much about wet grinding a few scope mirrors
by hand, but better to be safe than sorry I suppose, just wear a good dust
mask in future (I wouldn't bother)

How long until you would know? years - a decade - several decades.
Stop worrying about it, I could name a hundred things more likely
to get you than the glass you might have inhaled.


cheers
immorta