Re: [ATM] Current "favorite" for hogging?

["James Lerch" <jlerch1@tampabay.rr.com>]

----- Original Message ----- 
From: "Michael Lindner" <mikell@optonline.net>

> As for the pipe flange, someone asked for a picture. I have none,

http://images.acmehardware.com/200x200/5418702.jpg

> Place the mirror face up and use
> the flange as a subdiameter tool. It's still much more work than a
> powered curve generator, but it cuts faster than any other hand method
> I've tried.

I also agree with Mike, if the goal is to produce "A" mirror for a telescope (as 
opposed to tinkering with the process as a means of enjoyment), The fastest way 
to hog "A" mirror is with a pipe flange with a nipple screwed into it.

The absolute simplest / easiest / and possibly fastest way to a generated curve 
is to order the blank that way from the supplier.  When the blank arrives, it 
blanchard ground 'flat' on the back with the front beveled and pre-generated.

Having built a mechanized curve generator, I can say with certainty that it is 
fun to watch it cut the curve into a piece of glass.  However, that first cut 
felt more like a Gambling addiction than anything else :)

Take Care,
James Lerch
http://lerch.no-ip.com/atm (My telescope construction,testing, and coating site)
http://lerch.no-ip.com/ChangFa_Gen (My 15KW generator project)

"Anything that can happen, will happen" -Stephen Pollock from:
"Particle Physics for Non-Physicists: A Tour of the Microcosmos"

" Press on: nothing in the world can take the place of perseverance.
Talent will not; nothing is more common than unsuccessful men with talent.
Genius will not; unrewarded genius is almost a proverb.
Education will not; the world is full of educated derelicts.
Persistence and determination alone are omnipotent. "
                                                           Calvin Coolidge 

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