Help with urethane

  1. #1

    Help with urethane

    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. #2

    Re: Help with urethane

    Also, Same questions for foam latex. Thanks again

  3. #3

    Re: Help with urethane

    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. #4

    Re: Help with urethane

    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. #5

    Re: Help with urethane

    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. #6

    Re: Help with urethane

    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. #7
    evan4218's Avatar
    Member Since
    Nov 2005
    From
    Roanoke, TX
    Posts
    1,789

    Re: Help with urethane

    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. #8
    evan4218's Avatar
    Member Since
    Nov 2005
    From
    Roanoke, TX
    Posts
    1,789

    Re: Help with urethane

    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. #9

    Re: Help with urethane

    Thanks Evan, I appreciate it!

    Jeffro

Similar Threads

  1. Question: where to buy urethane resin in canada
    By wanta be jango in forum The Sarlacc Pit
    Replies: 2
    Last Post: Mar 4, 2010, 5:01 PM
  2. Question: urethane
    By Wildabeast in forum Boba Fett Helmet
    Replies: 1
    Last Post: Jul 4, 2009, 3:24 PM
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •