井戸掘り器の使い方(砂の層)

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Uploaded by on Nov 11, 2010

事前に砂を入れたあと井戸掘り器で取り出してみました。
砂の層で、鉄棒などで砂を解していればこのように砂を取り出すことが可能です。

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Science & Technology

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Standard YouTube License

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  • 手作り井戸掘り器の使い方が良く分かりました。根気のいる作業で­す。

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