Re: [ATM] ball bearings for triangles

["Mel Bartels" <mbartels@bbastrodesigns.com>]

> factor of 8.22. Keep in mind that all of these effects are caused by 
> multiple variations of 1 to 2-millimeters or less in positioning! What 
> this seems to indicate is that accurate positioning and/or 
> over-engineering are key to building a successful cell. Otherwise, your 
> 1/120th wavelength / 1/60th wave-front cell design can become a 1/15th 
> wavelength / 1/7th wave-front implementation, or worse! Not only that,

I realize that intuition plays little role, but my engineering 6th sense 
says that this needs to be investigated.  It's hard to believe that 1mm 
change in position degrades that severely.  It's almost as if the 
degradation is total once the position error > 1-2 mm.  I'd like to know if 
this is due to shear, because intuitively, it seems unlikely that sag would 
be the culprit.

Mel Bartels 

_______________________________________________
ATM mailing list http://www.atmlist.net/