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  1. evan4218's Avatar
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    Aug 23, 2006, 3:59 PM - Cold cast question #1

    when doing cold cast what is the best resin/gel coat to use? Clear or pigmented???
  2. fettpride's Avatar
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    Aug 23, 2006, 4:27 PM - Re: Cold cast question #2

    Clear ...

    You'll see




    FP
  3. evan4218's Avatar
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    Aug 23, 2006, 4:52 PM - Re: Cold cast question #3

    I with or without the pigment base? The place I got the stuff from said to use pigment but I think there full of it becase it dosnt look right to me? But I have never done this before.
  4. fettpride's Avatar
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    Aug 23, 2006, 5:25 PM - Re: Cold cast question #4

    If your cold casting ALU specifically, the BEST thing to use is clear layup resin. Not to be confused with clear CASTING resin used for embedding flies in ice cubes

    Clear gel coat is good too. But it more "picky" becasue of all of the filler that is already in gel coat. Gel coat of any color, is mixed with cabosil or other fillers to "thicken it". When you put your Alu powder into it, there is twice the filler, or MORE depending on how much your using. All this does is ultimately make your mixture more brittle when cured. Not to mention, that you have more instances of catalization error with all of this filler, leading to wrinkling, and a plethroa of other hassles that could take a lot of time and material to experiment with. Take it from me, been there, done that. That's why my Jango Gaunt project has taken so long

    Used clear layup resin. Not amber. "CLEAR". It will be the most brilliant when you buff your casted piece. Any other color, or "pigment" just reduces the potential brilliance of your final piece.

    There is of course, MUCH more to this that what's been said above. Some may get pretty good results just playing around with it. But for the best possible finish, there are many trick to be learned. What I mean by this is, most ppl don't care if they have to sand their finished pieces after casting before buffing and polishing. But this ruins the potential finish,permanently. It will still look like metal, but not like bright aluminum. It is of the utmost importance to keep the natural "skinning of your aluminum coating INTACT. That way when it's buffed after cure, it's as bright as it can be. Otherwise, if there is an imperfection, and you have to sand down past the skin coat,, it part will look like stainless steel or lead. It's just the nature of the process. The first priority is making the cleanest, smoothest mold you can.

    This will all make more sense in a few days when I post the new Jango Gauntlets. Anyone can cold cast, but ther eis a huge learning curve to get the level of brilliancy that we seek in Jango parts as an example. Although, his gauntlets are the dullest part of his suit, so mine are probably going to be unnacceptable to most purists But nothing a little rougher steel whool won't take care of I suppose

    Stay tuned !

    BTW - When you ask questions like this, all you do is spark curiostiy? Whatcha up to dude?

    FP
    Last edited by fettpride; Aug 27, 2006 at 5:50 PM.
  5. evan4218's Avatar
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    Aug 23, 2006, 5:52 PM - Re: Cold cast question #5

    I am making a cold cast removable board for my TF... using Sipdys little invintion as a jump off point... but sadly it just looks like Titanium metal. But I did not use "layup resin" nor did I use enough metal powser from what TF tells me.

  6. Spideyfett is offline Spideyfett
    Aug 23, 2006, 9:29 PM - Re: Cold cast question #6

    Nice... ...

    I want one..
  7. fettpride's Avatar
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    Aug 23, 2006, 10:51 PM - Re: Cold cast question #7

    As per our discussion privately, I figured I'd post the conclusion

    Urethane resin was the issue. Smoothcast 325, and metal powder = so - so results, at best.

    Polyester Layup-Resin, clear is the best if anyone is following this thread for tips

    FP
  8. psych0ticmisfit's Avatar
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    Aug 24, 2006, 8:54 AM - Re: Cold cast question #8

    Thanks for the tips, I found some Polyester Layup resin here: http://www.tapplastics.com/shop/product.php?pid=35&

    would this type work?
  9. fettpride's Avatar
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    Aug 24, 2006, 9:09 AM - Re: Cold cast question #9

    Actually no. It's amber. If you do a search for clear polyester layup resin, you'll get a ton. Pick something that's close to you, because haz mat S/H can be more the farther you are from your distributor.


    FP

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