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  1. MUNKRAWK's Avatar
    Member Since
    Mar 2006
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    102
    Dec 19, 2006, 1:05 AM - Help with urethane #1

    I am sculpting and casting a Superman Returns S. I know that it was cast in urethane. I have never worked with it before and would like to know a few things.

    1. Where is the best place to get it? Can I get all I need at Home Depot?

    2. Does urethane Resin need a hardener? (Can someone tell me exactly what I need to cast?)

    3. Any downfalls to this method?

    Any help would be greatly appreciated people. Thank you.
  2. MUNKRAWK's Avatar
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    Dec 19, 2006, 1:22 AM - Re: Help with urethane #2

    Also, Same questions for foam latex. Thanks again
  3. clonesix's Avatar
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    Dec 19, 2006, 8:14 PM - Re: Help with urethane #3

    1. not at home depot. If you don't have a plastics supplier in you area, you order on line at smooth on.com. At least look at their webpage and get an idea of the number of choices you have. Most 2-component chemicals are mixed by weight. If you don't own a scale, you might want to look for a product that mixes by volume.

    2. Yes. Urethane has 2 components, A & B. They usually mix 1:1 by weight.

    3. Be sure to use a mold release, or your mold and part have become one.
  4. clonesix's Avatar
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    May 2004
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    Dec 19, 2006, 8:17 PM - Re: Help with urethane #4

    Skip the foam latex until you have lots of money and a degree in chemistry.

    There are flexible urethane foams, if you want an easier route. They mix similar to previous answer.
  5. MUNKRAWK's Avatar
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    Dec 20, 2006, 12:09 AM - Re: Help with urethane #5

    Are there different kinds of urethane? is there a specific product I should get? Does Urethane resin have any flex to it when it is cured?

    Thanks for your help by the way!
    Jeffro
  6. clonesix's Avatar
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    May 2004
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    Dec 20, 2006, 1:02 AM - Re: Help with urethane #6

    plastics have a shore hardness scale. D scale for ridged, and A for flexible.

    the lower the number, the softer the material.

    The best way to determine what you want is to request some cured samples.
  7. evan4218's Avatar
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    Dec 20, 2006, 4:00 PM - Re: Help with urethane #7

    You want Smooth On Smooth-cast 300!!! You can die it any color you want with Smooth On pigment. Its slightly flexable but very strong and holds its shape. I think it has a shore hardness of 60. Its what most of the props you see sold are made of. Its an easy 100% A / 100% B mix ratio and cures quickly. Quickly enough to do a slush cast with it if you wish to. I think it runs about $25 for a 2 quart kit and $60 for a 2 gallon kit.
  8. evan4218's Avatar
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    Dec 20, 2006, 4:11 PM - Re: Help with urethane #8

    http://www.smooth-on.com/Getting%20Started.asp

    This link lets you buy sampler packs that give you the quart kit for SC300 and omoo Silicone casting material.

    For $25 plus shipping you CANT GO WRONG!!!
  9. MUNKRAWK's Avatar
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    Dec 21, 2006, 5:35 PM - Re: Help with urethane #9

    Thanks Evan, I appreciate it!

    Jeffro

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