Re: [ATM] recycling grit

["Tom Moulton" <tom@moulton.us>]

My Dad does Lapidary and he recycles everything.

He screens his waste to recycle.

He has screen mesh ranging from 500 to 80.

Smallest to Largest ot Largest to Smallest? I donno

Tom
GotGrit.com

ps. No, I do not buy my grit from him! LOL

----- Original Message ----- 
From: "Vladimir Galogaza" <vladimir.galogaza@zg.htnet.hr>
To: "jeff newsom" <triolian@earthlink.net>
Cc: "ATM List" <atm@atmlist.net>
Sent: Monday, December 26, 2005 4:07 AM
Subject: Re: [ATM] recycling grit


> Jeff,
> 
>>I've ended up with close to 20lbs of used 60 grit. 
>>This must be useable as 220 grit ? 350 or something
> >to that effect?? Any data on this???????? 
> 
> No data from my part but a single comment.
> Reading all that warnings on required cleanliness
> and hygiene while changing grits in order to avoid
> scratches, I seriously doubt that really all your
> grit is broken down to 220 or 350. By "all" I mean
> to the last grain. If not, what will happen when this
> grain shows its ugly face when you think you are
> working at 220 level.
> I will worry about it. And what with all this glass
> that is contained within used grit?
> But being inquisitive as I am, I will do the following
> experiment. Take a piece of plate glass, grind it
> with genuine 220 or 350 than take another piece of
> the plate glass and grind it with used 60. Observe
> the difference with magnifying glass. If the glass ground with
> used 60 shows pits and scratches not present in
> the glass ground with generic 220 or 350 then
> my worries are well founded. But I am pessimistic
> person and perhaps in this case overpessimistic.
> 
> Regards and season greetings.
> Vladimir.
> 
> 
> 
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
>
_______________________________________________
ATM mailing list http://www.atmlist.net/