Re: [ATM] no to beeswax!

[Mike Lockwood <melockwo@uiuc.edu>]

Hi,

Bill Marriott wrote:
> Nothing beats Gugloz Pitch #64 and CeO for generating a great mirror 
> surface.(IMO)

I couldn't agree more!

Jon Bales wrote:
>> Here's a miserable failure story. I'm polishing an 8" f5.7 mirror.  
>> Using pitch and CeO, I couldn't get a surface that didn't show some 
>> light scattering at the surface using a cheap red laser.  (there were 
>> comments about lasers previously). Otherwise the polish looked good.

This sounds normal to me.  There will always be some scattering.  How 
many hours of polishing did you do?  What cerium were you using?

>> I think I've learned not to use beeswax.

You probably were just fine without it.  How did the figure look? 
Were you close to a sphere after polishing (before you used the beeswax)?

I would probably scrape off the wax and press the pitch into contact, 
as long as it isn't too hard.  If the channels close after 2-4 hours 
of polishing, it's probably fine.

	Mike Lockwood



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