Hard disk material - test-drb@ccmp.vtda.org

2 Dec 2008

Wed Dec 3, 2008 bfranchuk wrote:

...
   take very
light cuts.  You would fabricate a cutter head
 that bolts in the same way as a R/W head.  To take a cut,
 you just tweak the adjustment screw(s) and turn an
 additional "feed" screw to cut the track the right
 width. 
  I'm guessing the bearings would be pretty light-duty. You'll never  
 get smoothness with a cutter. You'll need to either follow up w/ 
 grinding or lapping (or polishing?). 
It depends on the material of the drum, the RPM of the drum, depth of  
cut,  and how sharp your cutter is.  Lapping probably wouldn't hurt,  
but you don't want to be trying to take out gouges and scratches just  
by lapping.

-Bobby