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Mg shavings compositions


pyrogeorge

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I have a kilo of Mg shaving and i want to make stars/comets.

I made some bp comets with the shavings but didn't ignite.Which composition can i use to ignite them?

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Are your comets not igniting or is the magnesium not burning?

 

I'll assume it's the magnesium problem as a BP comet formula should ignite fairly easily.

Magnesium shavings can be fairly brittle (depends on the alloy though, where did you get them?), for a start i'd give them a quick milling just to break them apart a little. Otherwivse pass them through a 10 mesh screen to get rid of the biggest fractions.

 

Other than that, try a formulation that burns hotter, maybe add a couple percent of fine aluminium to bring up the temperature.

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This is the Mg size.

post-1952-0-87133300-1359811316_thumb.jpg

 

I made a 2" C8 comet to test if it ignite with this composition.

post-1952-0-90099700-1359811461_thumb.jpg

Edited by pyrogeorge
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Those Mg turning look huge. Hovever you can zip them quickly in a blender with a bit of oil. They will be turned to needle-like pieces, with sharp edges, way easier to ignite.

 

Even hammering the turnings in a bag will help with some screening.

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Seeing as the bag is on a concrete backing, i'd stab a guess and say "huge" as well. Trying to make em in to finer stuff will most likely solve the ignition issues.

B!

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