Friday 25 March 2011

Gallium ingots nearly ready for sale

Today the silicon funnel arrived so I was able to pour the liquid Gallium into ingots, moulded in a silicon mould used for chocolate making.
The reason for silicon moulds is because they're very slippery and flexible so the Gallium should be able to pop out without problems.  I can also reclaim the Gallium from the funnel by putting it in a plastic bag, then into the freezer and reclaiming the metal flakes of metal when they fall away easily.
1 kilo of pure Gallium metal
silicon chocolate mould and silicon funnel
For Gallium to melt it has to be heated to higher than 29*Celsius (84.2 Fahrenheit) So I put the bottle in a  
Warming a kilo of Gallium to a liquid state.
saucepan of quite hot water, but not very hot as to affect the plastic of the bottle. 
It took about an hour to turn the metal to liquid and it became very shiny.  It seemed like water with a very high surface tension.

Taking care I poured into the mould through the silicon funnel.  It felt quite strange.  Like pouring water but much heavier. 
You can see the result below.  They look very shiny.  They've been left to cool and harden and then I'll weigh them and sell each according to the weight.  
Pure Gallium poured into Silicon mould.


Hope you like the little adventure with this very strange and extremely rare metal.  I'll see about getting a mould to make smaller ingots because I think these quite big ingots may work out to be expensive.

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