Using the agraffe cutter

[Yardarm103669107@AOL.COM]

In a message dated 4/14/2001 5:33:14 PM Central Daylight Time, 
sec@overspianos.com.au writes:

<< The drill is run at low speed only, since very little material is 
 removed, and the faster the drill, the shorter the tool life of the 
 cutter.
  >>

Ron:
We've  been doing this for years using a small high torque/low speed (100 
rpm) motor and a holding device that sounds like yours. My question to you is 
what is the difference between the bit invented by Chris Robinson years ago 
and now marketed by Pianotek and yours (the one you drew for us and posted). 
The profiles look much the same. 
PR-J