need help findin silica free baby powder

Discussion in 'General Modeling' started by trooper, Feb 22, 2012.

  1. trooper

    trooper Sr Member RPF PREMIUM MEMBER

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    ive seen in several posts about getting bubbles out of resin casting..this is new to me so i thought i would try it, but, ive looked at every bottle in the store and none of them make any reference to having or being free of silica..so how do i tell?

    any help would be great :)
     
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  2. crackerjazz

    crackerjazz Sr Member

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    Re: need help findin slilca free baby powder

    Hi Trooper, I use regular Johnson's baby powder (didn't bother to look if it was silica-gel free - didn't know that) and it works fine. Make sure you keep the bottle always tightly closed as humidity makes the powder grainy which can lead to loss of cast detail (hmmm... maybe that's what the silica gel you mention is for - it probably has larger grains but keeps the powder dry).
     
    Last edited: Feb 22, 2012
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  3. trooper

    trooper Sr Member RPF PREMIUM MEMBER

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    Re: need help findin slilca free baby powder

    great,

    thank you
     
  4. robn1

    robn1 Master Member

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    If Johnson's works then that solves my problem too, thanks!
     
  5. trooper

    trooper Sr Member RPF PREMIUM MEMBER

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    havent tried it yet, but i bet it makes the castings smell preeeetty :lol
     
  6. ZOMBIEREPELLENT

    ZOMBIEREPELLENT Sr Member

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    I'll also vouch for Johnsons, doesn't make the casting smell any better tho :(
     
  7. Matsuo

    Matsuo Sr Member RPF PREMIUM MEMBER

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    Anything with talc has silica, corn starch based baby powder has none.. I prefer corn starch as it makes painting the piece easier, I've found talc based products sometimes give you trouble with fish eyes and adhesion problems.

    M
     
  8. trooper

    trooper Sr Member RPF PREMIUM MEMBER

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    thanks for the info. im going to have to realy clean this part before paint.
     

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