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razmosis13-Aquamarine
13-Aquamarine
March 12, 2026
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Changing Default Drill tip to 140° from 118°

  • March 12, 2026
  • 2 replies
  • 188 views

How can the default on drilled holes be changed to 140°?  While 118° may be standard for a lot of drills, almost all of our drills Ø3/8 and up to Ø1-1/4" are 140° inserted tips.  As a Creo NC user, I change models all the time sent to me by Engineering that have holes put in at 118°, just to match the drill that I will actually be using.

Best answer by tbraxton

To define the drill tip angle for hole charts in Creo Parametric, you can use the drilled_hole_tip_angle configuration option in the config.pro file. This setting controls the default tip angle for drilled holes and is available starting from Creo Parametric 4.0 M060 and later versions.

Default Value: 118°
Valid Range: 60° to 180°

 

You can also use the hole charts to set the tip angle for custom holes.

2 replies

tbraxton
22-Sapphire II
tbraxton22-Sapphire IIAnswer
22-Sapphire II
March 12, 2026

To define the drill tip angle for hole charts in Creo Parametric, you can use the drilled_hole_tip_angle configuration option in the config.pro file. This setting controls the default tip angle for drilled holes and is available starting from Creo Parametric 4.0 M060 and later versions.

Default Value: 118°
Valid Range: 60° to 180°

 

You can also use the hole charts to set the tip angle for custom holes.

    R
    razmosis13-AquamarineAuthor
    13-Aquamarine
    March 12, 2026

    Thank you!

    Patriot_1776
    Patriot_177622-Sapphire II
    22-Sapphire II
    April 17, 2026

    That’s a new one, I’m not a machinist, but I’ve never seen a drill bit with anything other than the standard 118deg included angle.  Are these for special materials, like hard to cut stainless alloys etc.?

    KenFarley
    KenFarley21-Topaz II
    21-Topaz II
    April 17, 2026

    Yeah, they have different tip configurations precisely because of different materials. We usually use 135 for hard metals like stainless, inconel, titanium. You’ve also got things like split tip and such. Whenever I’m looking at a new material to deal with I become a web-searching weenie looking for “testimonials” by people dealing with them to figure out what approach is best so I don’t snap or melt (the worst) the tools.

    Practical knowledge is nice to have, but it’s sometimes an expensive education to get...if I can learn from other people’s nightmares it’s always better.

      Patriot_1776
      Patriot_177622-Sapphire II
      22-Sapphire II
      April 17, 2026

      Yeah, I figured that.  I worked at a place that made exotic stainless parts for the Navy’s nuclear subs and carriers, and got to be friends with a Tooling Engineer who specialized in the tools and carbide inserts they used, that was his entire job.  He gave me a couple exotic drillbits and some green lubricant/coolant because I had to drill some stainless at home.  These bits are literally razor sharp and do a great job on SST.  He told me to use good/high pressure, slow spindle speed, use lots of lube, and stop often because you want the tip to dig in and cut, not scrape across the surface and build heat and work harden the part.  I’d just never really looked at the tip angle, and never researched it.  Makes sense!

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