Re: [ATM] Re: Fw: Hello at ATM list

[bchilders@everestkc.net]

David, 
For what it's worth, I did all my grinding and most of my polishing (Pads with CeO) in the garage with the door open.  I used a large tub and/or hose for washing things down between grits.  I moved the operation into the basement for final polishing (pitch with CeO) and figuring.  

I was dealing with a 10" that was fairly easy to move about and keep things clean.  With your 20" I suspect you have some additional struggles there.  You say you *hear* the grinding of sand but are you seeing any scratches?  If not maybe some sounds are being amplified?  If so maybe you have contaminated grits or you need to do a better job of cleaning between grits.

-Buck

----- Original Message -----
From: Michael Lindner <mikell@optonline.net>
Date: Tuesday, May 18, 2004 0:28 am
Subject: [ATM] Re: Fw: Hello at ATM list

> On Monday 17 May 2004 08:08 pm, you wrote:
> > My mother and father both say that I can't do any grinding even 
> though it
> > is fine grinding and polishing in side the house.  But I can see 
> the need
> > to have it inside because I'm at 320 grit and my telescope 
> mirror is a 20"
> > f5, the saggita is at 1/4".  And when I grind out doors I 
> sometimes hear
> > the grinding of a bit of sand.
> >
> > Can any of you help me with your support to argue that I should 
> grind> indoors?  Thank you.
> >
> > David Williams
> > dwilliams1128@earthlink.net
> 
> Hi David,
> 
> You need to send you email to atm@atmlist.net, not me. I'm CCing 
> this reply 
> there.
> 
> As for grinding outdoors, my local ATM group made several mirrors 
> entirely 
> outdoors. I imagine John Dobson has made many mirrors entirely 
> outdoors. If 
> you really have sand blowing around, then by all means put 
> something up as a 
> wind break. Now if you just want to work indoors, that's another 
> thing, and 
> I'm sure the good folk on the list can help you out if you can 
> tell us your 
> parents' argument against it. But if you wind up outdoors, don't 
> despair!
> Clear skies.
> -- 
> Michael Lindner
> http://www.starastronomy.org *** http://home.att.net/~mikel
> http://www.atmsite.org *** http://www.atmlist.net
> 
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 

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