Re: ATM Ranker

["Richard Schwartz" <richas@idt.net>]

I have successfully recycled grit for many years.   I save all of my rough
grinding mud in a bucket.  When I need fine grit, I stir up the bucket,
count five seconds,  and hold the mirror blank under water for 5 more
seconds.  The blank gets covered with fine grit.   Increasing the time
increases the mesh number of the grit.

However, for my last two stages of grinding (12 micron and 5 micron) I use
refined industrial microgrit.  I don't like to push my luck.

Oh, yeah, the other non-standard thing I do with grit is to start grinding
with #120.  That is what #60 turns into after about three strokes.

. . . Richard.


----- Original Message -----
From: "Ian Stirling" <root@mauve.demon.co.uk>
To: <atm@shore.net>
Sent: Tuesday, August 01, 2000 5:08 PM
Subject: Re: ATM Ranker


>
> > this, but hey you can't keep a fool down.
> >
> > Anthony
>
> In that spirit, has anyone any thoughts on a grit recycler?
>
> I'm thinking of something like, a nozzle, with an adjustable
> flow rate, with immediately after the nozzle, a place which used slurry
> gets fed into the fast flowing stream.
> As the flow gradually slows, the coarsest stuff seperates out, followed
> by the less coarse.
> This is collected in pots, which are removed and the appropiate
> grade selected.
> (this may be spurred on by the fact that I have LOTS of 30 grit SiC)
> Also lots of 600,1000, but nothing in between.
> I suspect going from 30-600 would take rather a while :)
>
> I assume this is a solved problem, just trying to find who solved it in
> an easy to make way.
>
>
>