Customs: Resin casting and dying questions.

Discussion in 'Creative General Discussion' started by jourdo, May 14, 2009.

  1. jourdo

    jourdo TFW2005 Supporter

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    How do you recommend doing this? Cast the part first then use a RIT dye, or add the appropriate dye to the resin when mixing for casting? What is the best method for colour matching to existing parts?
     
  2. frenzyrumble

    frenzyrumble Banned

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  3. jourdo

    jourdo TFW2005 Supporter

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    I`m using the alumilite white resin right now, and have bought some dyes for it... but I just wondered about options for colour matching to bots. I`m guessing it is a trial and error type of thing.

    I was hoping to find some sort of recepie/colour palate for the alumilite dyes. I know it changes based on the amount mixed.

    Edit: Also, I can't seem to find a grey dye at the hobby shop, so I might need to go RIT on that one.
     
  4. Rhinox555

    Rhinox555 Insert clever joke here.

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    Grey dye? Just use a tiny amount of black dye i think.
     
  5. jourdo

    jourdo TFW2005 Supporter

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    Yeah... just realized my stupidity on that. Duh.
     
  6. frenzyrumble

    frenzyrumble Banned

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    offhand, I haven't heard of people using RIT or any other of those types of dyes in resin, no idea what that will do to the properties of the finished product. Please test it out for us though
     
  7. jourdo

    jourdo TFW2005 Supporter

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    I've dyed a few times with RIT with good success (as long as it has been a dark colour). I did an Animated Soundblaster that way which turned out good (although the photos make it look spotty, but not so in real life). I also made a LOC Thundercracker which worked out fine. I've got an Animated Stepper in the "To Do" pile that is through the dye stage already. All with good ol' RIT.

    I'm assuming the casting resin is no different than these other plastics. I just wish I could remember my ratio of water to acetone, as I seem to wing it each time.

    Shit... just re-read the post... you mean adding the dye to the resin while mixing it. Hmm... I might have to give that a go and see what happens. Assuming it mixes well with the liquid, it COULD work. I'll put that on the to try out pile... maybe this weekend (I have some scrap molds I try it out on).
     
  8. frenzyrumble

    frenzyrumble Banned

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    for some reason, I was thinking you might be able to just add some drops of the dye to the resin before mixing it up....
     
  9. Viagra Prime

    Viagra Prime Well-Known Member

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    You can add the dye to the resin mix before the resin hardens. I recommend adding 1 part of the resin into a mixing cup. Add the dye next and mix it. And finally add the 2nd part of the resin and mix (instead of mixing the 2 parts resin and adding dye last). This will give you the maxium time before curing. I don't think you can cook the resin in RIT dye after it has harden like you would injection plastc so you have to add it before it is mixed/hardens. If you are using white resin then it will make the color you add lighter because you are basically mixing one color with white (the resin). For better coloring, you should use clear resin. That way, whatever color dye you add is the color you will get for the end product.
     
  10. jourdo

    jourdo TFW2005 Supporter

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    As far as I know RIT is only a powder, so as long as it will dissolve in the resin liquid, it should do the job. In theory that makes sense... doesn't it?
     
  11. frenzyrumble

    frenzyrumble Banned

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    Well, RIT does come in liquid. but curious, (maybe VP can answer this) can I just use some enamel paint? shit, I might as well just give it a shot.

    edit: doing it now, added a few drops of red enamel paint into the resin (part a) then mixed those, then added (part b)
    it's taking longer to set, but... it is setting.
     
    Last edited: May 14, 2009
  12. frenzyrumble

    frenzyrumble Banned

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    BAM!

    [​IMG]

    do you guys know this means you can cast in EVERY color, oh man a huge window just opened up.
     
  13. sunlink

    sunlink Be Transformed TFW2005 Supporter

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    wow - you're right that does open up a huge window. wonder if acrylic paints will work too
     
  14. TonyzCustomz

    TonyzCustomz Am I doin it rite? TFW2005 Supporter

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    Yep, you can pretty much mix anything into resin for colors(Paints, pigments, dyes, food coloring), just gotta be careful to never overload the resin or you will get the dreaded goo.

    Sweet cast F_r. How long did you have to wait over the normal cure time?
     
  15. Viagra Prime

    Viagra Prime Well-Known Member

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    I was going to say enamel paint works but I see you've discovered that already through testing. It does make the cure time a bit longer. And if you add too much the resin will never actually harden. I mean it'll solidify but be a bit too soft. They actually do sell casting dyes made specifically for resin. Though I don’t know if this is truly any different than say enamel paint or anything.
     
  16. jourdo

    jourdo TFW2005 Supporter

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    Has the texture of the resin changed at all with the paint additive? I'm assuming you are changing the chemical make-up of the resin... but anything significant?
     
  17. frenzyrumble

    frenzyrumble Banned

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    nope, perfectly smooth still. I've seen the dyes at the hobby shop, but I see in front of me about 60 bottle of paint. I'd imagine I can get super creative and make casts that are multiple colors (for example, that grimlock head, only spread silver to his mouth piece area, then pour black in the rest of the mold. Cure time was about the same, maybe 5 more minutes. it retains it's strength though. How do acrylics hold up? just curious...

    I might cast everything in black from this point forward, you can see the detail a lot better when not white.
     
  18. Viagra Prime

    Viagra Prime Well-Known Member

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    I've been told to only use oil based paint so I've never tried acrylic.
     
  19. project9

    project9 White n' Nerdy

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    I found this on the internets in a forum post... I wonder how true it is:

     
  20. Insane Galvatron

    Insane Galvatron is not insane. Really!

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    I put some black RIT dye in some resin, and it came out all weird. Some kind of chemical reaction caused it to have hollow places all in it.
     

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