From: "John Murray" 
To: "Russell Jocoy" , ,
        
Reply-To: "John Murray" 


G'day Russ,
        Yup.. I'm intending to figure the blank using my machine as well. Doing
it
by hand doesn't work for me. I originally built the machine as I enjoy the
process of grinding/polishing but I have severe pain in the lumbar region
doing it all by hand. Apparently the mirror can be figured by machine so
I'll be trying to learn the techniques of doing it. One thing I've become
aware of though is that doing 1/2 hr to an hour on a machine makes a big
change. The sessions are starting to become much shorter now.

Cheers

John Murray
Whyalla
South Australia
Check our web page at http://astronomy.sa86net.com ATM and M-O-M stuff.



>          John,
>                           Are you trying to figure your mirror with your
> machine?  I would not think so but from
> what your photos have shown , you have moved some glass around big time.
> Slow down a bit and
> smell the pitch. Get that lap and mirror off the machine and figure that
> mirror. From the last photo it
> looks like your a spherically close enough (wow spherically close
> ??) If you leave it on the machine I fear it will change too fast. Take
>real slow steps and do the Parob. stroke by hand. The last Photo looked
good enough to figure..        Advise from a novice, a dedicated
> novice,.....
>                                           Russ Jocoy

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