Welcome guest, is this your first visit? Create Account now to join.
  • Login:

Welcome to the NZ Hunting and Shooting Forums.

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed.

Ammo Direct Terminator


User Tag List

+ Reply to Thread
Results 1 to 11 of 11
Like Tree13Likes
  • 7 Post By SixtyTen
  • 1 Post By Micky Duck
  • 1 Post By Preacher
  • 2 Post By 223nut
  • 2 Post By Ftx325

Thread: DIY Extended Bolt Knobs

  1. #1
    Member SixtyTen's Avatar
    Join Date
    Dec 2015
    Location
    Auckland
    Posts
    523

    DIY Extended Bolt Knobs

    Hi Folks,

    I have done this to a bunch of rifles now and really like the results so I thought I would share it.
    Its a pretty simple method of adding an extended bolt knob using JB SteelStik. Its the perfect product for this and the whole job only takes around an hour.
    You do not need to get the handle threaded or machined at all, simple hand tools are all you need.

    Name:  IMG_20201214_175313461.jpg
Views: 734
Size:  162.3 KB

    Im starting with a factory Howa Mini bolt. I will be using this rifle for service rifle matches, so a fast bolt is important.

    Name:  IMG_20201214_175622114.jpg
Views: 658
Size:  141.6 KB
    Name:  IMG_20201214_180121994.jpg
Views: 687
Size:  79.1 KB

    I scar up the bolt handle pretty good with a carbide burr on a dremel. You could use files and sandpaper, but whatever you do, make sure there is some mechanical lock for the putty. Im not sure this stuff bonds well to the steel, so a mechanical bond helps. I tape up the bolt body and cocking mechanism so that I dont have to disassemble and clean everything afterwards.

    Name:  IMG_20201214_180158221.jpg
Views: 728
Size:  102.7 KB
    Name:  IMG_20201214_180305422.jpg
Views: 668
Size:  76.2 KB

    Cut off a section of the putty (note, I did not do enough here and had to add a little more. Probably another 10mm would have been plenty.)
    You have to kneed the crap out of it. I have noticed that sometimes there are little hard bits in the mix, if you feel these, just pick them out.
    You only have about 5min before it starts to go hard, so kneed it out really good, then slap in on the bolt.

    I have discovered that a big round knob works best for me, so I get it on there roughly round and keep working it as it get harder. You can use a popsicle stick or similar to mold the putty where it joins the bolt handle to get a nice clean edge.
    I just keep going over it until I cant move it anymore. This does not take long, so you dont want to piss around trying to get the shape perfect. It is very easy to shape and remove material or even add more if you screw up.

    Once it has gone hard enough that I cant move it by hand, I give it around 15min to cure a bit more, then get stuck into it with files and sandpaper. You can do whatever shapes you want, and if you decide you dont like it, grind it off and go again, or just add more putty on top of what is there.

    I finish it with 320g paper and find that this gives a decent grip and looks ok as well.

    Name:  IMG_20201214_181600513.jpg
Views: 678
Size:  83.0 KB
    Name:  IMG_20201214_181801546.jpg
Views: 653
Size:  144.4 KB
    Name:  IMG_20201214_183451124.jpg
Views: 618
Size:  70.6 KB

    I put a bit of a flat on the underside of this one to see if it helps to stop my finger sliding around as I lift the bolt. Probably a more aggressive concave going further out would work better, but ill shoot it a bit first and see what I think.

    Name:  IMG_20201214_183643490.jpg
Views: 641
Size:  140.6 KB
    Name:  IMG_20201214_183701461.jpg
Views: 645
Size:  121.4 KB

    The little lighter flecks you can see are the hard bits I didnt pick out. You dont always get this but its not uncommon.

    I have seen some people do very complicated versions with ribs and knurling but I like a simple ball.

    Iv been playing with the idea of spraying one with plastidip rubber coat (basically a spray on rubber coating) But my results with using that on other things has been very mixed, so I might try to get some other rubber coating products to try.

    Thanks for reading.
    rupert, rugerman, Tentman and 4 others like this.

  2. #2
    Member Marty Henry's Avatar
    Join Date
    Oct 2014
    Location
    Tararua
    Posts
    7,047
    Nice idea, I've successfully used the tikka rubber slip on bolt knobs they give considerable grip as well as doing one with epoxy like that. The tikkoption is of course reversible.

  3. #3
    Member Micky Duck's Avatar
    Join Date
    Apr 2015
    Location
    Geraldine
    Posts
    24,634
    sort of makes a fella wonder how folks ever managed with a butterknife bolt handle for all those years....maybe folks didnt need a big knob to do job back then.
    Finnwolf likes this.

  4. #4
    Member
    Join Date
    Mar 2018
    Location
    Turangi
    Posts
    1,373
    Recently did similar because Browning makes a bolt knob that is just awful. @Mickey Duck it's not much bigger just a better shape
    Micky Duck likes this.

  5. #5
    Member rugerman's Avatar
    Join Date
    Apr 2012
    Location
    Horowhenua
    Posts
    3,169
    Nice one
    that putty looks like some pretty handy shit

  6. #6
    Member
    Join Date
    Feb 2016
    Location
    Stewart island / canterbury
    Posts
    9,186
    Quote Originally Posted by rugerman View Post
    Nice one
    that putty looks like some pretty handy shit
    Keep a stick in the 4wd I case of any issues (Joy's of old vehicle ownership) perfect for exhaust repairs
    thejavelin and rugerman like this.

  7. #7
    Member
    Join Date
    Jun 2015
    Location
    christchurch
    Posts
    17,964
    the loctite bronze putty is the way to go. i once made a shotgun slug out of it, poor damn goat never knew what hit it. but it doesnt have "hard bits" when kneaded and damn easy stuff to work with

  8. #8
    Member Ftx325's Avatar
    Join Date
    Jul 2020
    Location
    Nelson
    Posts
    3,128
    on my last tikka I just used electrical shrink wrap on the knob. I didn't really want it much bigger in size but gave better grip wrapped than the polished metal finish and didn't add any weight. Gave it a custom look too.
    Moa Hunter and SixtyTen like this.
    born to hunt - forced to work

  9. #9
    Member
    Join Date
    May 2012
    Location
    Far North
    Posts
    4,874
    Quote Originally Posted by 223nut View Post
    Keep a stick in the 4wd I case of any issues (Joy's of old vehicle ownership) perfect for exhaust repairs
    will it work on a cracked headers?

    got an old surf with a v8 in it for laughs but yea big crack in the headers

  10. #10
    Member
    Join Date
    Jun 2015
    Location
    christchurch
    Posts
    17,964
    Quote Originally Posted by Bill999 View Post
    will it work on a cracked headers?

    got an old surf with a v8 in it for laughs but yea big crack in the headers
    wont take the heat

  11. #11
    Member SixtyTen's Avatar
    Join Date
    Dec 2015
    Location
    Auckland
    Posts
    523
    Quote Originally Posted by Ftx325 View Post
    on my last tikka I just used electrical shrink wrap on the knob. I didn't really want it much bigger in size but gave better grip wrapped than the polished metal finish and didn't add any weight. Gave it a custom look too.
    I like that idea, I have some large diameter heat shrink so I will give it a go.

 

 

Similar Threads

  1. Knobs
    By R93 in forum Hunting
    Replies: 75
    Last Post: 19-04-2013, 08:36 AM

Tags for this Thread

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
Welcome to NZ Hunting and Shooting Forums! We see you're new here, or arn't logged in. Create an account, and Login for full access including our FREE BUY and SELL section Register NOW!!