Homebrew PCBs

Proxxon's rotary tool has 0.001 runout: http://www.proxxontools.com/store/pc/catalog/manuals/proxxon_catalog_micromot_us.pdf

--- On Mon, 3/11/13, Jeff Heiss <jeff.heiss@...> wrote:

From: Jeff Heiss <jeff.heiss@comcast.net>
Subject: [Homebrew_PCBs] drill for micro drill bits
To: Homebrew_PCBs@yahoogroups.com
Date: Monday, March 11, 2013, 11:36 PM
















 



  


    
      
      
      I am drilling holes with #96 (0.006 inch) drill bits.  However, not one hole

has been drilled because the bits are so small compared to the runout of the

tool, they break in half when they touch the workpiece before any drilling

begins.  Copper clad is my workpiece.



I tried a Dremel, Dremel flex handpiece, and Marathon 35k RPM micromotor.

All three have too much runout and the bit breaks in half.  Has anyone

successfully drilled holes this small before?  Are there any suggestions for

a drill or rotary tool that has low runout?



Jeff



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