Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: This guy modifies cars with PU foam, see the results

  1. #1

    This guy modifies cars with PU foam, see the results

    I found this guy that modifies car with PU foam, It seems risky to me, because the sun and temperature changes can affect the foam, making it expand more or contract, and actually crack the surface.

    I remember when I was making a large scale sculpture for a customer, that I left the PU foam model in my car for 5 minutes while talking to his secretary to open his office, when I came to the car to pick it up, it was cracked all the way.
    that same day I decided to avoid using PU foam in projects that were in touch with the sun or exterior.

    Maybe this guy covers the foam with other thing besides bondo.







    Here is the full link:
    http://www.techeblog.com/index.php/tech-gadget/foam-car

    Best regards

  2. #2
    Senior Member MacGyver's Avatar
    Join Date
    Dec 2004
    Posts
    3,036

    Re: This guy modifies cars with PU foam, see the results

    Wow - I would love to hang out with that guy for a couple of weeks. to cool!
    Quote Originally Posted by jelpspeed
    I found this guy that modifies car with PU foam, It seems risky to me, because the sun and temperature changes can affect the foam, making it expand more or contract, and actually crack the surface.

    I remember when I was making a large scale sculpture for a customer, that I left the PU foam model in my car for 5 minutes while talking to his secretary to open his office, when I came to the car to pick it up, it was cracked all the way.
    that same day I decided to avoid using PU foam in projects that were in touch with the sun or exterior.

    Maybe this guy covers the foam with other thing besides bondo.







    Here is the full link:
    http://www.techeblog.com/index.php/tech-gadget/foam-car

    Best regards

  3. #3
    Senior Member
    Join Date
    Oct 2002
    Posts
    1,268

    Re: This guy modifies cars with PU foam, see the results

    i was liking the rear photo until i saw the whole car! it looks like its starting to melt already! i think this was in russia so that explains alot ;D

  4. #4

    Re: This guy modifies cars with PU foam, see the results

    Well, I like the rear of the car, the rear of the door looks like it might be 512 inspired. Not a bad build at all, its not totally to my liking but I can appreciate and respect the build process.

    To keep the foam from continuing to expand once its cured.... well lets say you have 12 ounces of foam, add between 3/4 to 1 once of resin (after you've added the catalyst) what you end up with is a very stable, rock hard foam. The down side is .... well its harder to work with cause its harder.... the upside is ....its harder.

    If you want a fluffy foam thats not very hard but has lots of bulk add water!!! Yes, WATER! I've used half ounce of water for roughly twelve ounces of foam. Go get some cheap resin and kinda play with it until you create a formula that works for you.

  5. #5

    Re: This guy modifies cars with PU foam, see the results

    Quote Originally Posted by rayvenrob
    Well, I like the rear of the car, the rear of the door looks like it might be 512 inspired. Not a bad build at all, its not totally to my liking but I can appreciate and respect the build process.

    To keep the foam from continuing to expand once its cured.... well lets say you have 12 ounces of foam, add between 3/4 to 1 once of resin (after you've added the catalyst) what you end up with is a very stable, rock hard foam. The down side is .... well its harder to work with cause its harder.... the upside is ....its harder.

    If you want a fluffy foam thats not very hard but has lots of bulk add water!!! Yes, WATER! I've used half ounce of water for roughly twelve ounces of foam. Go get some cheap resin and kinda play with it until you create a formula that works for you.
    nice tip, Iīve used water, but I also know that if you add too much water, it will expand like a cake and then deflate to a thin layer.
    but adding resin is a good idea, I will try it, and see how hard it becomes to sand.

  6. #6
    Senior Member
    Join Date
    Jun 2008
    Posts
    215

    Re: This guy modifies cars with PU foam, see the results

    The rims are HUGE, 26's?

  7. #7
    Senior Member
    Join Date
    May 2005
    Posts
    918

    Re: This guy modifies cars with PU foam, see the results

    What type of PU were you using? I know HILTI makes some PU that turns hard as a Rock, there are also some cheaper versins of the stuff. Also surfboards are made of this stuff and they seem to stand up well to Sunlight and salt water.


    I also do not think that the article listed all of the details of the process or the exact brand.

    http://www.sprayfoam.com/cdps/cditem.cfm?NID=106

  8. #8
    Senior Member
    Join Date
    May 2005
    Posts
    918

    Re: This guy modifies cars with PU foam, see the results

    http://www.hennisenterprises.com/index.htm



    This stuff stands up toheat very very well. Thats was its first use as a insulator. So I am not sure what quality of foam that you guys were using.

  9. #9

    Re: This guy modifies cars with PU foam, see the results

    Quote Originally Posted by PiMPaLiCiouS
    What type of PU were you using? I know HILTI makes some PU that turns hard as a Rock, there are also some cheaper versins of the stuff. Also surfboards are made of this stuff and they seem to stand up well to Sunlight and salt water.


    I also do not think that the article listed all of the details of the process or the exact brand.

    http://www.sprayfoam.com/cdps/cditem.cfm?NID=106

    It depends on the density of the foam, higher density, the size of the bubbles is smaller, and itīs harder to sand, expands less,
    I mostly use the lower density foam, it expands a lot, and itīs softer to sand, but have that inconvenient we talked about. the one I use is made here in mexico, they make lots of pu foam types, like the one in the bumpers of our cars, or the one on the bike seats, wood substitute and lots of kinds of pu.

    but Iīve found that the blue styrofoam is the perfect substitute for my projects. I can get a thick block by laminating it. and make the form easily with sandpaper, it doesnīt absorb any humidity or water. itīs perfect for me, I wish Iīve found it earlier in my life



  10. #10
    Senior Member
    Join Date
    May 2005
    Posts
    918

    Re: This guy modifies cars with PU foam, see the results

    Thats Awesome what is the Brand of the PU Foam, that you use? I would like to experiment with it.

Similar Threads

  1. what happened to all the guys who were sculpting their own cars in foam
    By racerdan in forum Technical Discussion & Question
    Replies: 33
    Last Post: 09-09-2009, 08:09 AM
  2. Anyone use any of those 'caliper covers'? Results?
    By FerrariXXXman in forum General Kitcar Chat
    Replies: 1
    Last Post: 08-25-2009, 07:29 PM
  3. Results: car shows and Ferrari owners?
    By FerrariXXXman in forum General Kitcar Chat
    Replies: 17
    Last Post: 08-12-2009, 12:20 PM
  4. 3.4 DOHC dyno results
    By FerrariFan in forum Technical Discussion & Question
    Replies: 2
    Last Post: 05-05-2007, 05:43 PM
  5. Foam for moulding
    By Rayven in forum Technical Discussion & Question
    Replies: 6
    Last Post: 04-30-2004, 12:20 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •