Is there an <axial> centrifuge?

[D Parsons]

I have a need for a centrifuge (say 3000 rpm) that can spin an
Eppendorf 1.8 ml style tube around it's <long> axis.  

If you put the tube onto the center of the rotor and held it there
with the tip of your finger as the rotor head spun that's the type of
spinning I need.    

Any help, workarounds etc  (e.g. I thought I could jury rig a 'holder'
onto the end of a power drill) appreciated.  

Thanks

D Parsons
South Australia