[TheForge] Chip forge

[Bruce Freeman]

No, hemispheres would not be good enough.  They'd pack much more tightly than spheres.

Remember, though, that the spheres need not be perfect.  Rounding off the corners on a cube would probably be good enough - provided there were no large flat sides remaining.  I'd envision using a rammable refractory, cut in cubes or cylinders like Frosty suggested, and rolled between the hands.  Alternatively, you could squeeze the stuff between dies.

Or buy it - alumina spheres.

Bruce
NJ

>>> marc at ironringforge.com 3/6/2006 1:22:40 PM >>>
How about some kitchen science? Check out http://tinyurl.com/j2zs5 

And would hemispheres be good enough? I'd bet they would be. But if not, you
could take the clay and force it into each half of the above tray, squeegee
each half, then stick them together until dry enough to hold their shape.

--Marc



Quoting Bruce Freeman <FREEMAB at pt.fdah.com>:

> Frosty,
>
> I think your ideas on making spheres are good.  Marbles used to be 
> made by cutting marble cubes (yes - marbles actually were made of 
> marble at one time) and rolling these between iron disks with 
> grooves.  The corners of the marble cubes wore off, leaving ... 
> marbles!

> Spheres will make for the least restriction in flame flow but provides the
> least surface area/volume ratio of any shape so heat transfer in and out
> will be minimum. Making spheres will I think be the most hassle as well.
>


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