Sprengman

Binder in the Lift?

The lifting powder is in most cases nothing than Blackpowder. And I never heared something about blackpowder with any kind of binder. The lift is simply pressed 75/15/10.

http://www.geocities...lverkuchen2.jpg

Here you kann see a standart "Cake" of 250g blackpowder pressed near to its maximum destiny. After drying over a period of some weeks it will be crushed in the powder breaker and sieved into different Grain sizes.

Some Photos from my 8" and "The Breaker"

Look at http://www.geocities.com/sprengman10/
All files wich starts with "my8in..." are about my 8"

I lift the 6" and 8" with extremly coarse grained Blackpowder. The particles are not finer than 3mm and it goes up to about 6mm.


http://www.geocities...chmaschine1.jpg
http://www.geocities...chmaschine2.jpg

Here you can see my Powderbreaker that crushes the pressed BP-Cakes in different sizes. Note, the mandrels with the bigest sizes between will get some milled tooth to get a better grip to the big "Rocks" of BP.

I don?t know what I want to do next.

But I?m sure that it would?t be greater than 8"

The last year I don?t made much pyrotechnic things because I build model airplanes and jetengines. Let?s look this year....It?s possible that I go for pyrotechnics again

@JamesH : The burst is simply blackpowder on corn cob without any Flash or whistle mix. I?d formed the hemispheres in a milled wooden form.

@paul: There is sound in the Video. I don?t know why you didn?t her it. Send me your E-Mail and I will try to send you a larger version. You?re right, many Stars had been crushed from the burst but I don?t know what to do with this damn Stars. The core of the outer Stars was:

55 Strontiumnitrate
28 Magnesium
10 PVC
7 Red Gum

On this I rolled a hot prime and cooked Chrysanthemum 8 (Shimizu). Although I rolled with a small amount of water an very thin layers some of the stars split of down on the core.
Last year I shoot a 6" Golden wave to red with the same problem. This sucks.

This should work:

http://www.zippyvide...vetored352x288/