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What did you do today in pyro?


dagabu

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I use silicon in my BP prime for the very reason it is slaggy.
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Prepared new years eve midnight fireworks show for tomorrow and Built & fired a nice 4" Shell (Silver tailed white strobe), unfortunately it was a little foggy and i was too near to catch the full burst.

Edited by Voryon
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nice tail!!!

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made a EXTREME whistle rocket today with Calebs tooling. I think I used too much wax and it perhaps wasn't fully dry but it worked. It'll give me something to tinker with for a while.
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Something I like to add to charcoal gerbs is a small lift charge in the bottom. I drill a passfire through the clay in the bottom and add about 0.5g of granulated BP and tape a cardboard disk over it. Before lighting these "jumping gerbs", I load them into a tube that's about the same height as the gerb. When the gerb burns down, it lights the BP which makes any remaining slag fire out the nozzle as a jet of sparks and makes the tube jump a few meters in the air! They're quite fun, and it just adds a bit of extra excitement to a pretty firework.

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Something I like to add to charcoal gerbs is a small lift charge in the bottom. I drill a passfire through the clay in the bottom and add about 0.5g of granulated BP and tape a cardboard disk over it. Before lighting these "jumping gerbs", I load them into a tube that's about the same height as the gerb. When the gerb burns down, it lights the BP which makes any remaining slag fire out the nozzle as a jet of sparks and makes the tube jump a few meters in the air! They're quite fun, and it just adds a bit of extra excitement to a pretty firework.

Thanks for the tip :D

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still dialing it in. It held together with 100% sali,the next step is KHP whistle mix
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What ya gonna put it in? small report? giant one?

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What ya gonna put it in? small report? giant one?

I dont really have any plans but i guess im going to make some small crackers or something. Just had to try the formual. It probably work as rocket fuel too so going to try that.

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Sondre Sed, "...Pretty surprised how good this composition burn it was meal powder and not granulated.

And im happy with the light it gives."

Sondre, if only to "keep the language intact", I must tell you that IF it was 'meal powder', it most certainly was granulated. Meal powder is the 'fines' resulting from pressing and corning black powder, and is itself just very fine granulated powder.

But, if it was anything else besides the fines from corning BP, if definitely was not "Meal powder".

Did you perhaps mean 'rough mix'? (just the finely-milled raw chemicals mixed together)

Lloyd

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Sondre Sed, "...Pretty surprised how good this composition burn it was meal powder and not granulated.

And im happy with the light it gives."

Sondre, if only to "keep the language intact", I must tell you that IF it was 'meal powder', it most certainly was granulated. Meal powder is the 'fines' resulting from pressing and corning black powder, and is itself just very fine granulated powder.

But, if it was anything else besides the fines from corning BP, if definitely was not "Meal powder".

Did you perhaps mean 'rough mix'? (just the finely-milled raw chemicals mixed together)

Weird that i did not know that after all the reading ive done. You got me there. it was the powder right from the mill..

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I finally got the 48 DR-11, 3", & 4" mortar racks assembled & painted, with the new HDPE tubes. I double sealed the plugs and installed lower tube baffles between the bunged ends to reduce the risk of adjacent tube flashovers.

post-21112-0-54831300-1515531274_thumb.jpg

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hand rolled a couple of hundred tubes 3/8 id x 1/2 od and some 3/8 x 5/8 for spolette tubes

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hand rolled a couple of hundred tubes 3/8 id x 1/2 od and some 3/8 x 5/8 for spolette tubes

How long did it take you ?

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Sondre, sed..."...it was the powder right from the mill..".

 

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Ah! A LOT of folks think that's "Meal powder". It's 'mill dust'. As before, Meal Powder is a specific thing; precisely, the fines from pressed and corned black powder.

 

So... mill dust I can appreciate, because I've been known to have some interest in ball milling! <grin>

 

Lloyd

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Spent 6 hours cooking up 5kg of dextrin to go into a batch of tube rolling glue.

Made up a glue sample to test the solids, spreadability and tack.

post-10522-0-71075400-1515576637_thumb.jpg

 

 

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Edited by Col
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