[Rockhounds] sphere-makers: how do you make very tiny spheres?

[Jim Murowchick]

I found the article (2 actually) for the sphere maker:

Sunderman, Harvey C., (1970) Refractive index determination by orientation
variation.  1.  Uniaxial crystals.  American Min., 55, pp.1405-1415.

He also refers to Bond, W.L. (1951) Making small spheres.  Reviews of
Scientific Instrumentation, 22, p.344.

Let me know if you need any help getting copies of those articles.  I'm
pretty sure the American Min article is free and available on line from
http://www.minsocam.org.

Jim


On 3/14/09 4:16 PM, "DonH" <donhalterman at verizon.net> wrote:

> 
> Hi,
> 
> I know some of you make spheres, usually of the 1/2" to 6" (or whatever)
> variety.  I know how these are made and have seen the equiment.
> 
> However, is anyone familiar with making extremely tiny spheres, less
> than 1 millimeter in size?  I would imagine the milling process as I
> know it doesn't scale down that small.
> 
> Thanks,
> Don
> 
>