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Why I don't use Loctite on Mounts/Rings

Discussion in 'Gunsmithing and Repairs' started by DRYHUMOR, Aug 30, 2009.

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  1. DRYHUMOR

    DRYHUMOR Member

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    I recall a few threads asking whether one would use Loctite or not. This is what I had to do to get a mount off of a rifle that someone mounted by Loctiting the screws.

    No big deal really, but it's good to be aware of the potential issues before they pop up.

    I got one screw out, the other two boogered up. Had to break out my trusty Dremel tool :D and cut down past the screw shoulders. The mount lifted up and off.

    I've always used oil and proper torque to hold mount and ring screws in. But, some folks do use Loctite.
     

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  2. Winston_Smith

    Winston_Smith Member

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    What Loctite were you using? I use Loctite 222, the low strength stuff. I really like it on the receiver screw for 10/22's.
     
  3. Beelzy

    Beelzy Member

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    I would consider that a true testament to Lok-tite's stellar performance.

    I don't use it on aluminum threads though, it rips them right out.
     
  4. rcmodel

    rcmodel Member in memoriam

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    Blue Lock-Tighted screws can be removed with common gunsmith screwdrivers.

    If somebody used red lock-tight, then you have to use heat on the screw to release it.

    Usually, a soldering iron or pencil-flame torch held on the screw head will get it hot enough to smoke the lock-tight, at which point the screw will come out easily.

    rc
     
  5. Seafarer12

    Seafarer12 Member

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    I use blue locktight and have never had a problem. What you should be telling people is don't use red or JB Weld. I picked up a Contender barrel once mainly for the fore end and the scope mount with the plans on selling the barrel for the price I paid for it. I had a lot of trouble getting the screws out of it. I thought I was going to have to drill them out. I finally got them out and had to pry the scope base off. Someone had used JB Weld on everything to mount that base including glueing the base down with it. Messed the otherwise perfect finish up. I refinished it the best I could and put a rear sight on it. I can't remember what I sold it for but It was quite a bit less because of the refinish on the barrel.
     
  6. jimmyraythomason

    jimmyraythomason Member

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    +1 on the BLUE Loctite.
     
  7. rodregier

    rodregier Member

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    +1 on blue locktite too. It's designed to be removable.

    http://tds.loctite.com/tds5/docs/222-EN.PDF

    LOCTITE® 222 is designed for the locking and sealing of
    threaded fasteners which require easy disassembly with
    standard hand tools.
     
  8. Tony Sopranno

    Tony Sopranno Member

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    DRYHUMOR:
    A bit of heat works really great to break down the Loctite bonds. Depending on the type used it either holds by expansion in the hole/confined space, or it adheres in an acrylic-like bond. Heat breaks down both... but be careful not to overheat past an extremely (very) hot point - you don't want to heat it so hot that it effects the tempering of the metals in question. A really good heat gun or a small torch would do it... just don't over-do it.
     
  9. DRYHUMOR

    DRYHUMOR Member

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    Yeah, I get the heat part.

    Unfortunately, the screw heads went early on.

    I figured they were either over tightened or Loctited. Once I removed the mount, I saw the Loctite. And yes, it does do a good job.

    I normally use the blue at work, sometimes the red, and once and awhile stuff called "bearing mount".

    It's rated somewhere around 400 degrees. It's a PITA to remove something if someone uses it in the wrong application.

    But, I don't use Loctite on ring/mount screws. Just my preference.

    I do sometimes put fingernail polish on any threads that protrude though.
     
    Last edited: Aug 30, 2009
  10. jbaker

    jbaker Member

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    When the screws got messed up should have used heat and a easy out that way the base could still be used.
     
  11. ENCPirate

    ENCPirate Member

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    So is blue loc tite is not to hard to remove for mounts? I have been having a problem keeping some screws tight on one of my scope mounts and was about to put some on the screw threads next time I tighten it up.
     
  12. rcmodel

    rcmodel Member in memoriam

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  13. DRYHUMOR

    DRYHUMOR Member

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    jbaker, I wasn't worried about the mount, I was replacing it with some Talley bases I had on hand.

    ENCPirate, what RC said.

    I use a good many of the Loctite products at work, fuel lines, air lines, engines, panels, screws, bolts, etc. There's nothing wrong with using it. As with anything, read the directions and use the proper type for the application.

    It appeared that the stuff on the mount screws I dealt with was the red, judging by the residue. It has a stronger bond than the blue.
     
  14. TexasShooter59

    TexasShooter59 Member

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    Can someone tell me how to get the blue loctite off of the receiver where it spread a little under the base? I am wondering if I can clean it up. Thanks.
     
  15. Dr. Tad Hussein Winslow

    Dr. Tad Hussein Winslow member

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    Here's what I do - don't know if it's right or wrong or best or not:

    Red or Black other other color loctite - no, never, on anything.

    Blue loctite:

    1. On BASES, yes.

    2. On rings, if it just uses hex screws, then no way; they can strip - jeebus I despise plain hex screws

    3. On rings, if it uses torx or slotted screwdriver screws, then yes, but ONLY after I've shot that rifle/ gun combo for several years, thought it over a long time, and decided that THAT particular scope is the marriage made in heaven for that rifle for a long time to come.

    4. When removing, if necessary, I DO use heat to help them break initially, even on blue, if they don't come right off - I just apply a flame (which is really probably NOT a good idea, since that can affect the heat treat of the steel I believe - but I do it).

    I don't do aluminum anymore, so all of this applies to STEEL only.

    People that do use it too much or incorrectly help to keep gunsmiths in business. I view this as a good thing. :)
     
  16. Uncle Mike

    Uncle Mike Member

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    While I understand your point Tad....I cringe when I have to work on a firearm that has been doused with Loctite.

    IF one uses quality mounts, bases and rings, you wont need to get out the blue glue.

    Also, most mount manufacturers will void warranty if Loctite was used on their product.
     
  17. Sunray

    Sunray Member

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    "...my trusty Dremel tool..." Throw it away. You've destroyed a good mount that would have come off with a bit of heat. A fine pointed soldering iron or a few seconds with a propane torch would have loosened the Lock-Tite enough for a proper screw driver.
    Rotary tools in the hands of inexperienced people have no place in gunsmithing.
     
  18. DRYHUMOR

    DRYHUMOR Member

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    Throw it away! :eek: Never!

    Sir I am qualified on that piece of equipment. :D I wouldn't just operate without training. ;)

    I wasn't worried about that mount, in fact, I've got a small box with old mounts in it that I'll never use.

    Those type mounts only use 3 of the 4 mounting holes. I prefer two piece mounts like Talley, or a single mount that uses all 4 holes.
     
  19. stevehps

    stevehps member

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    this is what i think

    i think the people who invented loctite invented the dremel.
     
  20. pmeisel

    pmeisel Member

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    Loctite is great -- to use on cars and trucks.
     
  21. AKElroy

    AKElroy Member

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    I use Blue LT on bases only & nothing on the remaining harware. I like for optics to be easily replaced / moved / adjusted.
     
  22. AKElroy

    AKElroy Member

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    Doc--I agree that heat would be a last resort. I just received a set of gunsmithing screwdrivers today, and reading the enclosed literature was eye opening. I have used heat in the past, but may refrain from doing it again after reading that just 400 degrees is enough to materially weaken heat treated steel.

    This was in the context of filing driver heads to fit a particular application; the instruction being to keep an oil or other coolant bath flowing during the grind. If grinding / filing gets you over 400 degrees, I would think the flame would get there very quick as well.
     
  23. dagger dog

    dagger dog Member

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    An inch pound torque wrench, but you have to find specs.

    As the old saying goes cross threading beats Loctite any day!
     
  24. jmorris

    jmorris Member

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    On very fine threads I use E6000 http://eclecticproducts.com/e6000_ind.htm

    It won’t allow the fastener to loosen by vibration yet can still be removed if you want it to, without damage. It has many applications that don’t involve fuel oils. IMOP red locktite shouldn’t be used on any fastener under ¼” in diameter.
     
  25. DRYHUMOR

    DRYHUMOR Member

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    That stuff looks pretty spiffy.
     
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