Ed,

If your concern is that an increased number of hits on a tool will impact
the tools ability to evacuate debris, your looking in the wrong
direction.  Only design characteristics can impact debris evacuation as
far as the tools are concerned (those design characteristics being flute
form, flute to land ratio, helix angle, and flute length).  You may want
to check the vacuum and be sure that it is pulling adequate in/H2O.
Also, make sure that you do not have too much vacuum as it can cause an
effect known as oil canning (the vacuum sucks the entry off the stack
while the pressure foot insert is in contact with the production stack).


There are other items that you can look at but I do not believe the
debris problem you have is do to too many resharps.  However, if you
suspect that your repoint supplier is "skim pointing" your drills, mark
some tools with a UV ink and measure overall length when the drill come
back (you'll need a black light to find your marked drills).  Some
repointers will skim point to speed up the repointing process ( an
average repointer can point 1000 tools in an eight hour shift when taking
five mils of stock...that same repointer can get 2000 points in an eight
hour shift when only removing 2 mils of stock).

You really need to work with your machine and tool supplier to solve this
problem if it persist.  If you would like more of my opinions contact me
off the Technet and I'll be happy to help.

Regards,

Mark R. Ford  -  Megatool

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