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Thread: Tungsten bulbs

  1. #1
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    Default Tungsten bulbs

    Anyone have any experience of this stuff? Could be good for the health/environmentally conscious. Its's expensive - but not that expensive and the effective density (max 10000 kg/m3 in bead form) is probably higher then most people get when they do not want to actually melt lead.

    http://www.tungsten-heavy-powder.com...hnon_poly.html
    Last edited by Angus - DECEASED; 01-29-2007 at 06:25 PM.
    A.

    He who dares sometimes wins.
    He who doesn't always looses

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  2. #2
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    angus, that stuff looks awesome. i was gonna use birdshot, or trout splitshot, but a powder? ya man.

  3. #3

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    Quote Originally Posted by Angus View Post
    ...the effective density (max 1000 kg/m3) is probably higher then most people get when they do not want to actually melt lead
    The rules say
    E.4 Materials shall not be of density higher than lead; 11300kg/m3.
    They say:
    Tungsten is a suitable material for lead replacement applications. It has an even higher density than lead.
    Rule change on grounds of health and the environment?

  4. #4
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    Depends what you mean by the 'material' - the casting compunds or its components. If it isn't legal, it probably should be. I haven't tracked it down but there are rumours of some impending legislation in Europe that could make a lead keel illegal (like police, courts and judges illegal). We found out about it because we are designing a Footy for use in schools and they are VERY unhappy about lead.
    A.

    He who dares sometimes wins.
    He who doesn't always looses

    Footys GBR 26 Little Gull
    GBR 28 Dingo
    GBR 61 Merlin
    GBR 71 Akela
    GBR 77 Sun Dog
    GBR 171 Mandeln i gröten

  5. #5

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    Quote Originally Posted by Angus View Post
    Depends what you mean by the 'material' - the casting compunds or its components.
    Now that would be an "interpretation", like calling a cake "materials" along with the eggs and flour

  6. #6
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    'The materials used include concrete ...'
    A.

    He who dares sometimes wins.
    He who doesn't always looses

    Footys GBR 26 Little Gull
    GBR 28 Dingo
    GBR 61 Merlin
    GBR 71 Akela
    GBR 77 Sun Dog
    GBR 171 Mandeln i gröten

  7. #7

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    Yes, it seems that most every subsequent study done on lead shows it to be more toxic than predecessor studies suggested. I have the same problem as Angus in that lead is out of the question for any student activity. For those who think this is an overreaction, may I respectfully submit something that I was told by a very respected environmental scientist: the problem isn't exposure to any potentially dangerous substance by itself, the problem is exposure to that substance in the context of all the other stuff we ingest in an industrial society.

    The alternatives I am pursuing include bronze castings, lead-free pewter, and now the tungsten powder/resin mix. Lead-free pewter, "potted" to reduce exposure to water, is the current leader.

    Cheers,

    Earl

  8. #8

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    Quote Originally Posted by Angus View Post
    'The materials used include concrete ...'
    Oh well then, why not encase some iridium shavings in some epoxy and you're done

  9. #9
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    is the density of iridium legal?

  10. #10
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    1/2 pound of tungsten powder - on Amazon.com for $20.00 ...........

    BUT - remember, the shipping cost is like lead, sometime too expensive to ship - try to find locally.

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