Hollow Spheres

[RPreble]

I am looking for a 1/8" hollow aluminum sphere that will float in oil. This means the wall can be no thicker than .006". Any ideas for sources?

Thanks

 

[Thrusterman]

try

http://www.3m.com/microspheres/index.html

I used this web site for glass spheres but don't know if they have aluminium spheres as well.
regards
TM