Re: [ATM] Flat making on You Tube

["Anthony Anconetani" <Anthony.Anconetani@genband.com>]

Good morning everybody,

Mike L. makes the following comment at the end of the e-mail, " By the
way, 1u grit does save polishing time, and you can use it since you are
grinding glass on glass."

If you build a Hydrostone tool with pieces of glass instead of tiles,
can you fine grind down to 1u? By what percentage is the polishing time
reduced if one fine grinds down to 1u (SWAGs are acceptable 8-)?

Thanks

-Anthony, Round Rock TX

> -----Original Message-----
> From: atm-bounces@atmlist.net 
> [mailto:atm-bounces@atmlist.net] On Behalf Of Mike Lockwood
> Sent: Tuesday, October 16, 2007 3:07 PM
> To: ATMList
> Subject: Re: [ATM] Flat making on You Tube
> 
> Francis,
> 
> Thanks for posting the videos.  I am going to call your cat 
> "Fortunado the Contaminator".  Thanks for plugging the list.  
> It's fun to drag the slider and watch you spin around the barrel.
> 
> Since I can see the work, I can say a few things about what 
> you're doing, if you don't mind a little feedback that might 
> benefit you and others (and you invited comment in the video).
> 
> First, I got headsets for both of my telephones, and they're great.
> They save a lot of time.  I can talk while grinding, 
> polishing, and figuring.
> 
> Second, when you start your wet of 5u, you put on quite a bit 
> of slurry.  When you put the top disk on, most of the slurry 
> is forced out and over the edge of the disk on the bottom, 
> and thus wasted.  So, use less slurry.  When you get too much 
> ground glass building up, wipe it off, apply a few new drops 
> of slurry, and continue grinding.  There is no problem with 
> adding grit in the middle of the wet if necessary. 
>   You can judge the grinding action by the sound.  When it 
> gets quiet there is either too much glass in the sludge, or 
> the grit is spent.
> 
> Third, when fine grinding you don't need to use both hands.  
> One hand or even just fingertip pressure is fine, since you 
> don't need to apply downward pressure for 5u.  This helps 
> randomize the strokes, too, and reduces any zoning.  You can 
> do spirals, circles, ellipses, straight strokes, etc.  This 
> is easier on your back.
> 
> Lastly, if your stand was smaller in diameter, it would be 
> easier on your back.  It is best if you can stand up 
> straight, and a smaller stand would help this, as might a 
> slightly higher stand.  When you get your technique, the 
> stand height, and the stand diameter right, you can grind for 
> hours without back issues (or neck issues from looking down 
> at the work).  Also, putting your bucket on a table keeps you 
> from having to bend over, which saves your back too.
> 
> By the way, 1u grit does save polishing time, and you can use 
> it since you are grinding glass on glass.
> 
> 	Mike Lockwood
> 
> Francis J. O'Reilly wrote:
> > I just posted a video of my optical shop and my endeavors making an 
> > optical flat (or three) on You tube / Google Video. If you 
> would like 
> > to view it, Go to www.YouTube.com and type in Optical Flat. It goes 
> > from Part 1 to Part 6 in ten minute increments.
> > It is a home video and not too professionally done, but I 
> had a great 
> > time making it. Early on, my co-star, one of the cats
> > (Fortunado) makes a cameo appearance
> 
> 
> 
> 
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