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Thread: What kind of drill bit for pinned front sight install?

  1. #1
    Pilgrim/Stranger awp_101's Avatar
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    What kind of drill bit for pinned front sight install?

    Picked up a Dawson FO for my 686+ and I need to drill the hole for the pin. The instructions say to use a #54 (IIRC) but Iím curious if I should go with a HSS bit, cobalt coated bit or something else. I need something that will do the job quickly because 1/16Ē bits and punches donít seem to have very long lifespans around meÖ🙄
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  2. #2
    Quote Originally Posted by awp_101 View Post
    Picked up a Dawson FO for my 686+ and I need to drill the hole for the pin. The instructions say to use a #54 (IIRC) but Iím curious if I should go with a HSS bit, cobalt coated bit or something else. I need something that will do the job quickly because 1/16Ē bits and punches donít seem to have very long lifespans around meÖ🙄
    I do not think you need anything special, but I have not done that many. I do know I buggered up my Super Blackhawk and had to bump up to a larger pin.
    You probably know this, but you wanna drill in from both sides so the hole meets in the middle.

  3. #3
    Pilgrim/Stranger awp_101's Avatar
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    Yeah, Iíve learned that the hard way once or twice!🤣
    Nothing so needs reforming as other people's habits - Mark Twain

    Tact is the knack of making a point without making an enemy / Where is the wisdom we have lost in knowledge?

  4. #4
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    Quote Originally Posted by awp_101 View Post
    Picked up a Dawson FO for my 686+ and I need to drill the hole for the pin. The instructions say to use a #54 (IIRC) but Iím curious if I should go with a HSS bit, cobalt coated bit or something else. I need something that will do the job quickly because 1/16Ē bits and punches donít seem to have very long lifespans around meÖ🙄
    Call Dawson - they are quite helpful.

  5. #5
    Quote Originally Posted by awp_101 View Post
    Picked up a Dawson FO for my 686+ and I need to drill the hole for the pin. The instructions say to use a #54 (IIRC) but Iím curious if I should go with a HSS bit, cobalt coated bit or something else. I need something that will do the job quickly because 1/16Ē bits and punches donít seem to have very long lifespans around meÖ🙄
    Drill quality (which often relates to origin) will be more important than coatings or if it is hss vs cobalt. Cheap Chinese drill bits are seldom a bargain. From my limited experience, drilling and swapping 1 s&w dawson front sight, the steel doesn't present any special machining problems. If you are using a mill (or even a drill press with a spindle that is true to the table) it is a very fast /easy job.
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  6. #6
    Pilgrim/Stranger awp_101's Avatar
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    Turned out to be easier than I expected! Working a little bit from each side took less than 5 minutes total. I probably spent longer getting things set up after turning it each time than the actual drilling.

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    Nothing so needs reforming as other people's habits - Mark Twain

    Tact is the knack of making a point without making an enemy / Where is the wisdom we have lost in knowledge?

  7. #7
    Quote Originally Posted by awp_101 View Post
    Turned out to be easier than I expected! Working a little bit from each side took less than 5 minutes total. I probably spent longer getting things set up after turning it each time than the actual drilling.

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    Glad it went as drama free as mine did. I am still amazed how comfortable a 3" L frame is in JMCK aiwb rig...
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  8. #8
    Pilgrim/Stranger awp_101's Avatar
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    Quote Originally Posted by Skinner Precision, LLC View Post
    I am still amazed how comfortable a 3" L frame is in JMCK aiwb rig...
    I haven't cleared the "If I'm going to carry something the size and weight of a G19, I might as well carry a G19" mental hurdle yet but I'm trying.
    Nothing so needs reforming as other people's habits - Mark Twain

    Tact is the knack of making a point without making an enemy / Where is the wisdom we have lost in knowledge?

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