RE: [CAD_CAM_EDM_DRO] Re: Very Confused!! Need help.

Also keep in mind that how deep you cut is also related to the runout (which
can break small end mills). The hand drill probably has quite a bit of
runout, requiring a shallower cut.



Hand drills also aren't made to take the side loads, which would necessitate
taking an even less aggressive cut.



Pete



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Pete Brown - Gambrills, MD (Near Annapolis)
Visit my personal site : http://www.irritatedVowel.com
(wallpaper, western maryland ry, .net, photography, model rr)



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From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Dale Beckel
Sent: Friday, January 05, 2007 7:49 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: RE: [CAD_CAM_EDM_DRO] Re: Very Confused!! Need help.



Normally tool makers only want to go 1 to 1 (diameter to depth) on an
end mills. I've gone deeper on a CNC machine, but not a hand drill. When
you take deep cut carbide works better it is stronger than high speed.
Spiral cutters cut free than a straight fluted cutter.
Contact the maker of the end mill and they will give you a catalog or
many of them have the info online to get the speeds & feeds you need.
They will also have the formulas you need.

Dale Beckel
Mansfield Screw Machine Products





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