1. The sand helps keep it from arking out when it blows it turns to glass and capturs a lot of the viporizes betal and can look realy cool .I have never torn one apart that has not blown good vid 👍

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2. What the outer white material is made of?

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3. that aluminium foil is actually pure silver and contacts are silver plated brass.

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4. What charger do you use? I have 10OAh CAlb 3.2v cells what to you recommend? Something I can button balance and charge

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5. if it is ultrafast fuse for semiconductor protection it should be silver alloy some kind not aluminum.

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6. The sand like substance is to stop the fuse from exploding.
   If you have ever seen a glass 20mm x 5mm fuse explode the reason is that if it gets a huge over load i.e. a short where the load is say 100 times the fuse rating the fuse element evapourates and the deposites as a thin film on the inside of the glass tube.
   This can make the circuit again but because the metal is on a surface it cannot heat up quickly so a huge current again flows this time shattering the glass.
   The ceramic versiions of this fuse called HRC (High Rupture Current) have the sand like substance in them and it stops the formation of the 2nd fuse when it evaourates.

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7. Thats dangerous butwow

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8. getting creative…….. 😉 going good.

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9. cool!! .

   I always wonder how it looks inside.
   Thanks for sharing !

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10. $250 for strips of metal and sand. Those guys are making a killin on that fuse!

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11. Thanks for doing that!

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12. 🙂
    Interesting. Thanks for the peek…….
    🙂

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13. Awesome!

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