I give up...

Discussion in 'General Gun Discussions' started by Panzerschwein, Sep 7, 2014.

Thread Status:
Not open for further replies.
  1. Panzerschwein

    Panzerschwein member

    Joined:
    Nov 19, 2011
    Messages:
    8,122
    Location:
    Desert
    Hello, well I got a new rifle today and it has good bluing but has a light coat of dark brown rust, almost like someone sprayed it on with an airgun, on top of much of the bluing. I read that this can be removed with 0000 steel wool and gun oil, so I set to work doing this and I had rag after rag after rag covered in dark red as I was wiping it down after rubbing with the oiled steel wool.

    But the rust wouldn't stop coming.

    Again, this is just a light patina of dark brown rust... no pitting or anything like that. But I scrubbed and scrubbed and used an entire bag of 0000 steel wool and while it does look better, there are still numerous patches of surface rust and it just won't go away. I don't know what to do and frankly it's driving me up a wall. I am using Hoppes Elite gun oil for this projet, and normal Wal-Mart 0000 steel oil.

    Does anyone know how to fully remove this rust, or should I just leave it be? Thanks for the help everyone! :)
     
  2. ugaarguy

    ugaarguy Moderator Staff Member

    Joined:
    Mar 19, 2006
    Messages:
    13,773
    That sounds like packing grease or cosmoline. I'd try cleaning if with absorbent rags and a good solvent.
     
  3. Ks5shooter
    • Contributing Member

    Ks5shooter Contributing Member

    Joined:
    Dec 16, 2013
    Messages:
    2,552
    Location:
    Communist state of nj
    I agree with above.
     
  4. Reloadron
    • Contributing Member

    Reloadron Contributing Member

    Joined:
    Jul 6, 2012
    Messages:
    9,083
    Location:
    Cleveland, Ohio USA
    That would also be my guess. I would completely take down the rifle and completely wash all the metal with a rag and mineral spirits.

    Ron
     
  5. Trent

    Trent Member

    Joined:
    Dec 6, 2010
    Messages:
    25,151
    Location:
    Illinois
    Check the bore good too.

    I received a brand new S&W M&P 15 performance center gun in 2012, and the bore was 100% obstructed by brown grease.

    I couldn't even get a 22 rod through. Had to break out a 17 cal rod to even THINK about getting it through. It took the better part of 2 hours to get the sludge out of the bore. It was a gritty sort of ultra sticky crud that was seemingly impervious to every solvent I tried.

    Was aggravating; I've seen cosmoline tank dipped WWII rifles that weren't that sludged up.

    With the recent Remington recall on 700's over the trigger group grease issue, it seems more than anecdotal that factories are starting to go a little overboard on preservatives.
     
  6. bannockburn

    bannockburn Member

    Joined:
    Apr 24, 2007
    Messages:
    25,285
    Cooldill

    If it is rust I have found Flitz to be very effective in removing surface rust without harming the finish underneath. Years ago I had a Beretta Model 70S that had the same recurring rust problem. Beretta even reblued the gun under warranty as they admitted there had been similar problems with other guns. Still the rust returned again so eventually I had the gun hard chrome plated.
     
  7. Panzerschwein

    Panzerschwein member

    Joined:
    Nov 19, 2011
    Messages:
    8,122
    Location:
    Desert
    Thanks guys, this is a Yugo SKS and I already used a ton of mineral spirits and a nylon bristle brush to scrub out the cosmoline. Then hit it with some chlorine free break cleaner. It got all greasey feeling residue off, but under that this remained:

    image.jpg

    image.jpg

    image.jpg

    This stuff is STUBBORN, is it really just dried cosmoline? I used steel wool and oil to rub the area then a paper towel to wipe off the stuff and it left dark brick-red residue on the paper towels. I got alot of it off but there seems to be spots where it just doens't want to leave.
     
  8. BullfrogKen

    BullfrogKen Moderator Emeritus

    Joined:
    Jul 28, 2005
    Messages:
    14,885
    Location:
    Lewisberry, PA
    Sounds exactly like cosmoline.
     
  9. Panzerschwein

    Panzerschwein member

    Joined:
    Nov 19, 2011
    Messages:
    8,122
    Location:
    Desert
    Cosmoline!? Darn... how do I get it off then!?!?

    I'm so confused! Did I damage the finish by using the oil and 0000 steel wool? How do I get that cosmo off now?
     
  10. vamo

    vamo Member

    Joined:
    Mar 18, 2012
    Messages:
    737
    Location:
    Missouri
    I've heard of people just leaving their guns outside in the sun on hot days to let the cosmoline melt off. The only gun I've ever had that had cosmo on it I got when I was living in an apartment so that was not an option to me. I found dish soap and hot water to be effective.
     
  11. Ky Larry

    Ky Larry Member

    Joined:
    May 22, 2003
    Messages:
    3,526
    Location:
    Ky
    Saw this on Rimfire Central:

    Strip all metal parts off the rifle. Put them in some kind of tupperware container and fill with mineral spirits or kerosene. Cover and place in the sun for a day or two. Remove barrel from stock and slop up barrel inside and out with mineral spirits or kerosene. Place in black plastic bag and place in sun for a day or two. I haven't tried this method personally but the folks on RfC are usually pretty sharp.
     
  12. herrwalther

    herrwalther Member

    Joined:
    May 1, 2013
    Messages:
    7,464
    Use mineral spirits to get it off. Most stores sell a "green" version that smells a little better. Get some plastic bins and soak the metal parts in, piece by piece. Brush around the spirits with nylon brushes, wipe off with a rag, air dry for a little bit, then use oil to prevent rust.
     
  13. nathan

    nathan Member

    Joined:
    Feb 4, 2003
    Messages:
    5,070
    The Yugos did a thorough job of dippling those rifles in cosmolene. Maybe the Russians taught them well.
     
  14. Panzerschwein

    Panzerschwein member

    Joined:
    Nov 19, 2011
    Messages:
    8,122
    Location:
    Desert
    Okay sounds good, I am soaking all the small parts in mineral spirits and will leave them for two days or so. I alreayd did soak them last night but only for about 3 hours. God I hope this works... :(
     
  15. herrwalther

    herrwalther Member

    Joined:
    May 1, 2013
    Messages:
    7,464
    Soaking them only gets you so far. You have to work the mineral spirits to break down the cosmoline. Took about 3 hours to clean the cosmoline out of my Mosin, doesn't need to sit overnight or days.
     
  16. Panzerschwein

    Panzerschwein member

    Joined:
    Nov 19, 2011
    Messages:
    8,122
    Location:
    Desert
    Just to clarify, this stuff looks like a dark reddish brown coating that is really clinging to the metal. Even after rigorous scrubbing with 0000 steel wool and Hoppes oil, it won't budge. This is AFTER soaking the barreled action and all other parts in mineral spirits for over 3 hours... it looks like rust to me.

    I have a hard time believing this is cosmoline. One thing I've noticed is that it really shows up in sunlight and looks sort of iradescent. Is there any easy way to get rid of this stuff?

    When I was scrubbing it it would come off, leaving brick red residue on paper towels. I read somewhere someone said soaking it with Kroil will make it to were you can just wipe it off... is this true?? Also do you think I damaged the bluing by using the steel wool?
     
  17. jeff-10

    jeff-10 Member

    Joined:
    Feb 14, 2004
    Messages:
    1,676
    Location:
    South Florida
    I agree it's likely cosmoline. I had a run in with it a decade ago on a Yugo M48. Had to do the whole mineral spirits thing which did remove some of the finish but I finally got it all off.
     
  18. Ky Larry

    Ky Larry Member

    Joined:
    May 22, 2003
    Messages:
    3,526
    Location:
    Ky
    CZ's used to come with this gunk on them. IIRC, Orange GooGone cut it pretty good.
     
  19. Arizona_Mike

    Arizona_Mike Member

    Joined:
    Feb 15, 2013
    Messages:
    3,453
  20. RFMan

    RFMan Member

    Joined:
    Nov 11, 2009
    Messages:
    141
    Location:
    Cary, NC
  21. Panzerschwein

    Panzerschwein member

    Joined:
    Nov 19, 2011
    Messages:
    8,122
    Location:
    Desert
    Well I tried a heat gun to see if it would remove the stuff... it didn't, but it did scortch my front night sight so that is ruined. Great. Plus the stuff is made out of radium so I'm pretty sure I absorbed some of that when I tried to salvage the front sight.

    So now after all this work, the brown crap on my gun is still there... and... I'm irradiated.

    I'm going to bed.
     
  22. Fast Frank

    Fast Frank Member

    Joined:
    Feb 17, 2007
    Messages:
    1,114
    Location:
    Houston, Texas (Woodlands)
    Cosmoline is a petroleum product.

    Now, I'm no chemist or cosmoline specialist, but I've messed with a BUNCH of petrolium products that have gotten old and become a problem.

    It happens all the time in carburators.

    In that case, the petrolium product in question starts off as gasoline.

    It sits for a while, and then for a while longer, and then it starts changing.

    It appears that the lighter parts evaporate first, and the remaining parts of the petrolium go from being liquid, to a dark liquid, then a greasy goo, then a hard film that looks for all the world like varnish.

    Like I said before, I'm not a chemist or cosmoline expert, but it's not too difficult to imagine that some 50 year old cosmoline could go through a similar drying/hardening process and produce a similar varnish like substance.

    If that is the case, then it's understandable that what used to be cosmoline now looks quite different and is difficult to remove.

    In the case of the carburators, we soak them in a special solvent and sometimes it's a whole day before the varnish finally gives it up.

    For what it's worth, I have also seen quite a few rifles with rust on them.

    Rust is rarely uniform like shown in your pics. It happens where the finish is compromised, and not where the finish is intact.

    That's why a rusty rifle is usually damaged here, but not there and also why it pits here but doesn't there.

    So, with all that in mind, I'm going to agree with everybody else and say it's cosmoline. (Or more correctly, it was cosmoline 50 years ago and it's varnish now)
     
  23. Davek1977

    Davek1977 Member

    Joined:
    Jan 2, 2008
    Messages:
    2,569
    No offense, but WHY do you have such a hard time believing that, when you've described, in detail, the issue, and several people experienced with cosmoline had offered up their opinions that it is indeed cosmoline? Just because its stubborn, nasty, stuff that doesn't seem to go away no matter how much you work with it.... doesn't mean its not cosmo...in fact, thats a pretty good indicator that thats EXACTLY what it is.
     
  24. Panzerschwein

    Panzerschwein member

    Joined:
    Nov 19, 2011
    Messages:
    8,122
    Location:
    Desert
    Yes, after further research I've found cosmoline can make a varnish like coating such as this.

    Also in the process of using a heat gun to try and melt the cosmoline off, I burned off the bottom range marking on the grenade launcher sight.

    The woes continue. :(
     
  25. hso

    hso Moderator Staff Member

    Joined:
    Jan 3, 2003
    Messages:
    62,961
    Location:
    0 hrs east of TN
    Probably best to put it down and walk away for a week or two since the task seems snake bit at this time.

    Take the thing out of the wood, dunk it in diesel, let it soak, and scrub it with a stiff nylon brush. Avoid anything using too much energy.
     
Thread Status:
Not open for further replies.
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice