[] inhaling dried []

Discussion in 'New Recruits' started by zsoldier, Mar 16, 2011.

  1. zsoldier

    zsoldier New Member

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    i plan on making SENTINEL costume from marvel vs capcom 3.
    take my noobie quesiotns and ill give you a sentinel costume!

    1.) inhaling resin is bad. but when its dry, its fine to breathe in your helmet?/ smell no longer there? how is drying resin safe to breathe in helmet? anyone know the physiology behind it?

    2.)inhaling fiber glass is bad. when putting coat of resin over it. theres no way to inhale it in your helmet? or can you?

    3.) best way to get rid of paint smell ? or why use spray cans vs acrylick, which has no smell?

    ----------are there protective layers you can use to avoid inhalation of these?!?!
  2. lordzoabar

    lordzoabar Member

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    Read the stickies for answers to all of this.
  3. higdog827

    higdog827 Member

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    Well, I havent done any fiberglassing yet, but Im pretty experienced with paint, so Ill try to answer the third question. As for the smell, just make sure youre painting in an open area, perferablely outside or in a very well ventilated area such as a garage. Also be sure to use a respirator if you decide to use spray paint. Now generally, spray paint will definately have more of a smell than acrilic, but i perfer spray. Hope this helps!
  4. Spitfire22V

    Spitfire22V Well-Known Member

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    When fully cured, resin should not smell, at least not that strong. I don't know the exact "physiology" of it, but drying resin gives off fumes, and will continue to "gas off" until fully cured.

    Now, people are constantly worried about inhaling fiberglass, and to be honest, I'm not sure what they mean. If they mean unused fiberglass cloth, I'm not sure how you're going to inhale strands of it. However, when cutting it, grinding it, or sanding it, there will be lots of microscopic dust particles that are very bad if inhaled. Just be sure to wear a respirator (or at least a dust mask) when working on it, and give it a good wipe down when finished. In all honesty, a properly fiberglassed Pepakura armor piece should be waterproof, so you literally wash it.

    Get rid of paint smell? Umm...perfume? I really don't know if there's any way to avoid some paint smell. If you're that worried about it, use acrylic paint as you suggested. Spray cans just tend to be convenient if one doesn't have an airbrush.
  5. gakkengod

    gakkengod Member

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    the left over smell you are speaking of could mean its not fully cured... please if you can let it sit out in an open ventelated room or outside, overnight and it should be fine after that. Dried fiberglass or fiberglass resin has no fumes or side affects you should be concerned with.
  6. ventrue

    ventrue Well-Known Member

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    I don't even know what a Sentinel is, so I'll just answer you for free if you don't mind.

    First of all, you don't inhale the resin. Doing that would kill you really fast and really permanent... would be like drowning, only water is a lot thinner than resin.
    What you are talking about are just the fumes emitted by the resin. The smell, so to speak, assuming the fumes have one. There are different kinds of resin, and they all work differently, smell differently and have different effects on your body.
    I'll just assume you're talking about polyester resin (aka "fibreglass resin"), that's the one with the strongest smell. What you mainly smell there is styrene, which is a solvent. Other than in most paints, however, it doesn't just evaporate and leave some solid stuff behind, but it actually takes part in the reaction that takes place when the resin cures (side note: resin does not just "dry", it really does react, i.e. change chemically) and becomes part of the finished material. The stupid thing is: When something reacts, there are usually some stray atoms/molecules that don't take part or don't do so right away. Any such styrene molecules can still evaporate, even when it seems like the reaction is over. Adding more hardener (which, in the case of polyester resin, is a catalyst, i.e. stuff that makes the reaction happen, imagine it like a kick in the rear for the chemicals) speeds up the reaction and can reduce the time during which the cured resin still smells, but it will smell for a while, a few weeks at least. The smell will go away eventually though and it is safe to breathe while wearing a finished helmet.
    The physiology behind it... 3M has a pretty nice MSDS for their fibreglass resin, you can find it with Google. All the health effects are neatly listed in there, most are caused by the styrene.

    When using polyester resin, wear a respirator with vapour filters. If it's white and soft, it's the wrong one. You'll also need gloves (heavy chemical ones if you plan on working the resin with your hands) and safety glasses. Keep in mind that other resins may require different safety measures. Epoxy, for example, fives off far less dangerous fumes, but is far more dangerous when you touch it.

    If you do it right, the resin will completely envelop the fibreglass, so there's no way for it to get out unless you break your model. I've also read contradicting advice regarding the inhalation of fibreglass particles. Some sources actually say something about it being natural and degrading in your lungs over time... I don't believe that though. I think what they mean to say is: It's better to breathe in fibreglass particles than asbestos particles.

    You already bought a great respirator with perfect fit after question 1.), so just get particle filters for that. If you can, get some that you can put on top of the vapour filters, because you'll need both filters at the same time, e.g. when spray painting.

    Just give it some time.

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