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It's funny.  Laugh. Science

Homemade Silly Putty 225 225

kinema writes "Have you ever wanted a ball of Silly Putty as big as your head? Now you can make it at home. The University of Minnesota's Chemistry Department has instructions on how to make it on their website." Isn't silly putty a copyright circumvention tool? This should be regulated before it gets out of hand.
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Homemade Silly Putty

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  • Dont Joke (Score:3, Interesting)

    by nurb432 (527695) on Sunday September 14, 2003 @11:39AM (#6957050) Homepage Journal
    It IS copyrighted.. so that page COULD be shut down by ( i think ) hasbro..

    Gotta love the society we live in now..
  • Re:Dont Joke (Score:2, Interesting)

    by Anonymous Coward on Sunday September 14, 2003 @11:46AM (#6957099)
    Actually it's a security circumvention device [dansdata.com], used to bypass fingerprint scanners
  • Go UMN! (Score:0, Interesting)

    by dieman (4814) * on Sunday September 14, 2003 @11:50AM (#6957124) Homepage
    Woot!
  • Just Buy in Bulk (Score:5, Interesting)

    by Jagasian (129329) on Sunday September 14, 2003 @12:36PM (#6957359)
    You can buy 5 lbs of silly putty for $60 [crayola.com]. Many people have done this before, and you can do some very interesting stuff with it. Like make a potato gun that shoots baseball sized balls of putty at brick walls. There are videos of this, and the putty ball shatters like a piece of glass because of its "silly" properties.

    Its fun to do other experiments like bake it, freeze it, etc...
  • Not Silly Putty (Score:5, Interesting)

    by Jagasian (129329) on Sunday September 14, 2003 @12:47PM (#6957451)
    The Elmber's Glue recipes don't make actual silly putty. They make some cheap nasty knock-off that creates a silly putty-like compound that is slimey, leaves a greasy mess on anything it touches. Not only that, but this putty goes bad over time, unlike the real silly putty, which never dries out or gets moldy.

    There is a recipe for making the real silly putty compound, but it is far more difficult and requires ingrediants and tools not found in a grocery store.
  • by Tycho (11893) on Sunday September 14, 2003 @01:02PM (#6957541)
    So what would happen if you dropped a head sized or larger amount of silly putty from three stories up? Would it bounce or would it splash? Or would it pancake? Has anyone actually tried this?
  • by chriswaco (37809) on Sunday September 14, 2003 @01:21PM (#6957647)
    You are correct. It is fake!

    We made actual silly putty in high school about 20 years ago. The main chemical was highly reactive to water, including the moisture in the air. A small bottle of the stuff (Dimethyldichlorosilane IIRC) came packed in 5 layers of protection, including a small wood box, and could only be ordered with the aid of a helpful adult with access to dangerous chemicals.

    When we withdrew the liquid from the bottle using a syringe in our lab's hood, a wet rag 4 feet away starting smoking.

    The putty we created wasn't very good. It did bounce, but didn't have all of the properties of the real stuff. Once we realized that we had no good way of disposing of the chemical, we had to keep making putty until it was all gone!

    Today, we'd probably all be arrested for doing this in a public high school, but it was a great learning experience.
  • Re:Buy in Bulk (Score:2, Interesting)

    by len_harms (455401) on Sunday September 14, 2003 @05:58PM (#6959022)
    One use is for physical therapy. My grandma used about a 2 pound chunk while recovering once from a fall. They gave it to her for building up her grip strength and to grip while in pain when trying to walk. When she died I snaged the 2 pound chunk. No one else wanted it...

We have a equal opportunity Calculus class -- it's fully integrated.

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