Free 186 More Best Homemade Tools eBook:  
Get 2,000+ tool plans, full site access, and more.

User Tag List

Results 1 to 2 of 2

Thread: Flat bottom short drill bits

  1. #1
    Supporting Member Christophe Mineau's Avatar
    Join Date
    Jul 2014
    Location
    France, Brittany !
    Posts
    913
    Thanks
    825
    Thanked 1,687 Times in 481 Posts

    Christophe Mineau's Tools

    Flat bottom short drill bits

    Hi,
    In wood turning, I like inlaying some pearl dots in my pieces.
    For that, the best is to manage to drill a small hole with a flat bottom.
    For that purpose I once found in a shop an 8 mm bit that works very well (the white one, in the middle here below), but I can't find that kind of bit any more in other diameters, so I decided to make them :



    There is a 10 on the right and a 6 mm on the left. They are made from those useless too cheap bradpoint bits like the one at the top. They are always off center and cut very badly.
    So I cut them shorter, and grind two lips, at an high angle.
    I leave a small centering pin.

    I ground them on the metal lathe, using my Dremel attachment in the tool post, and a small cutting wheel in the Dremel.







    Obviously, the high angle, and the round (not drilling) pin in the middle, do not permit to drill more than a few millimeters, but they are not actually made for drilling, but for shaping the bottom of the hole.
    Works well, for what I need !

    186 More Best Homemade Tools eBook
    Cheers !
    Christophe
    ________________________________________________________________
    Visit my Website : http://www.labellenote.fr/
    Facebook : La Belle Note
    All my personal works, unless explicitly specified, are released under
    Creative Commons BY-NC-SA license.

  2. The Following User Says Thank You to Christophe Mineau For This Useful Post:

    kbalch (May 29, 2015)

  3. #2
    kbalch's Avatar
    Join Date
    Jun 2012
    Location
    Clermont, FL
    Posts
    5,034
    Thanks
    2,275
    Thanked 531 Times in 383 Posts
    Thanks Christophe! I've added your Flat Bottom Drill Bit to our Luthiery category, as well as to your builder page: Christophe Mineau's Homemade Tools. Your receipt:


    2000 Tool Plans

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

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