Results 1 to 5 of 5

Thread: .5 inch drill for drilling ar400, please help find

  1. #1
    Registered
    Join Date
    Dec 2007
    Location
    canada
    Posts
    52
    Downloads
    0
    Uploads
    0

    Default .5 inch drill for drilling ar400, please help find

    Hi guys, I am looking for a drill bit that will drill ar400 steel, I have been using the one pictured, it was in a bunch of tools that I bought in a auction, so do not know where it comes from, and nobody around here sells it..




    Similar Threads:


  2. #2
    Registered
    Join Date
    Mar 2006
    Location
    USA
    Posts
    2688
    Downloads
    0
    Uploads
    0

    Default

    PTD might be Precision Twist Drill. They're located in Crystal Lake IL., USA. Their drills are sold by most of the major tool suppliers. Could also be a screw machine length Cobalt drill with TiN coating.

    Dick Z

    DZASTR


  3. #3
    Registered
    Join Date
    Jan 2007
    Location
    USA
    Posts
    1388
    Downloads
    0
    Uploads
    0

    Default

    Quote Originally Posted by RICHARD ZASTROW View Post
    PTD might be Precision Twist Drill. They're located in Crystal Lake IL., USA. Their drills are sold by most of the major tool suppliers. Could also be a screw machine length Cobalt drill with TiN coating.

    Dick Z
    +1 one of the best drills around. I use thousands of them over the years.
    that looks like a 135 split point cobalt stub ( ie screw machine)



  4. #4
    Registered fizzissist's Avatar
    Join Date
    Apr 2006
    Location
    USA
    Posts
    3194
    Downloads
    0
    Uploads
    0

    Default

    Ibid on Delw's post.

    It's a Precision Twist Drill, uncoated HSS, screw machine length...but looks to me like a 118deg point though. (your monitor may differ)


    Great company, I've used their drills and reamers for decades. They've got a wide selection, and offer pretty good support.

    Welcome to PrecisionDormer

    Your AR400 has a Brinell of 400, and this stuff is nasty. I'd be curious to see how many holes you can get with that drill. But I'd call tech support if you can't find the equivalent on their website for the right drill for that mat'l.



    MSCdirect handles them, along with a host of other mail order outfits.



  5. #5
    Registered
    Join Date
    Dec 2007
    Location
    canada
    Posts
    52
    Downloads
    0
    Uploads
    0

    Default

    OK, guys, thanks for your replies, this drill did have a double tip like nothing that I have seen before, and I have drilled over 1800 holes in .5 inch ar400 and only sharpen in last couple hundred, an regular drill bit only lasts like 6 holes,



Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


About CNCzone.com

    We are the largest and most active discussion forum from DIY CNC Machines to the Cad/Cam software to run them. The site is 100% free to join and use, so join today!

Follow us on

Facebook Dribbble RSS Feed