Pennsylvania Firearm Owners Association
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  1. #1
    Join Date
    Feb 2010
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    Levittown, Pennsylvania
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    Default Hoppe's #9 doesn't dissolve carbon very well

    Submersed a .30 carbine bolt in Hoppe's overnight, expecting some discoloration the following day. Thought it would save disassembling the bolt.
    Nope. Ran Q-Tip on face, got blackened. Pretty obvious the extractor was retaining carbon. It's the reason I bought the bolt tool.

    Maybe Carb cleaner spray? I have an air compressor. Anyone have success with carbon-cutting fluids?
    Legislating to prevent people's acts is fantasy

  2. #2
    Join Date
    Oct 2012
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    Douglassville, Pennsylvania
    (Berks County)
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    Default Re: Hoppe's #9 doesn't dissolve carbon very well

    My go-to for tough dirts is Methyl Ethyl Ketone (MEK) if you can find it anymore. I made my last purchase at Sherwin-Williams not too long about but I wouldn't be surprised if it's no longer available. It's really nasty stuff and only use it outdoors or in extremely well ventilated garage. Lowe's et al sell MEK substitute but I can assure you it does not work as well.

    ETA: I cannot vouch for it's effectiveness on carbon but would expect it to work.
    Sorry but I'm all out of pity right now, please try later.

  3. #3
    Join Date
    Oct 2013
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    'burbs, Pennsylvania
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    Default Re: Hoppe's #9 doesn't dissolve carbon very well

    Iíve had great results using Gun Scrubber. I use it OUTSIDE. Blast the bolt, slide, insides of the receiver, whatever. Hit it with air compressor or just a can of compressed air. Let it drip dry. Very effective and fast.
    Liberalism is the belief everyone else should be in treatment for your disorder.

  4. #4
    Join Date
    Sep 2006
    Location
    Reading, Pennsylvania
    (Berks County)
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    Default Re: Hoppe's #9 doesn't dissolve carbon very well

    Carb cleaner, brake cleaner, Gun Scrubber if it's what I think it is will clean everything off your parts really fast. The problem is, when your parts dry right away and look dry, they ARE dry because all the oil is gone.

    Metal without oil rusts, FAST. I use brake cleaner occasionally on really filthy stuff, but have a can of CLP or other oil right next to me. As soon as the solvent is gone, spray the crap out of the parts and get oil back into the pores. As long as you oil right away, you should be fine.
    Don't sweat the petty stuff, and don't pet the sweaty stuff.

  5. #5
    Join Date
    Jul 2013
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    Mohnton, Pennsylvania
    (Berks County)
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    Default Re: Hoppe's #9 doesn't dissolve carbon very well

    Oil of wintergreen is the carbon solvent. Marvel mystery oil has it. You can buy it straight. Be carful. It metabolizes into aspirin. It’s in Ben gay, tiger balm, gum, all kinds of stuff. Look it up.

    You are asking number 9 to remove carbon without mechanical action. Not gonna happen. Get an ultrasonic cleaner. Use elbow grease.
    The Gun is the Badge of a Free Man

  6. #6
    Join Date
    Jan 2013
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    West Chester, Pennsylvania
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    Default Re: Hoppe's #9 doesn't dissolve carbon very well

    How about alcohol?

  7. #7
    Join Date
    Dec 2011
    Location
    Where the amish roam, Pennsylvania
    (Lancaster County)
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    Default Re: Hoppe's #9 doesn't dissolve carbon very well

    Been using shooter lube seems to do a good job better than a lot of stuff I've tried before

    https://www.shooterlube.com/collecti...=8714417012846

  8. #8
    Join Date
    Sep 2009
    Location
    Ross township, Pennsylvania
    (Allegheny County)
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    Default Re: Hoppe's #9 doesn't dissolve carbon very well

    Quote Originally Posted by HKusp 45 View Post
    Been using shooter lube seems to do a good job better than a lot of stuff I've tried before

    https://www.shooterlube.com/collecti...=8714417012846
    I recently seen video reviews on the solvent. I'd like to try it on the AR but kinda worried it may pull the Frog lube from the pores. I really like the ease of clean up frog lube provides but this stuff looks like it would make it even easier. I contacted the manufacturer and asked if it was compatible with frog lube, I'll post what they say for those who are interested when they get back to me.

    Shooters lube response:

    "The solvent is designed to strip all oils and lubricants from the surface that it is being used on. Frog Lube included. One thing to be careful with FL though is that they use a bio based formula that when mixed with petroleum based products their lube can gel up. You would want to make sure that all the old lube is removed and the solvent is wiped off before reapplying fresh Frog Lube if that is what you planned on continuing to use."
    Last edited by K.C.; July 17th, 2019 at 05:12 PM.
    http://forum.pafoa.org/image.php?type=sigpic&userid=22341&dateline=139092  6582

  9. #9
    Join Date
    Jun 2010
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    North Penn area, Pennsylvania
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    Default Re: Hoppe's #9 doesn't dissolve carbon very well

    Kroil.
    I don't speak English , I talk American!

  10. #10
    Join Date
    Feb 2010
    Location
    Levittown, Pennsylvania
    (Bucks County)
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    Default Re: Hoppe's #9 doesn't dissolve carbon very well

    I have a can of Kroil. I have used it to scrub bores. I'll try it on the bolt next time.
    Legislating to prevent people's acts is fantasy

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