Vulcano/ Cone

[Pyroboy]

Hey Guys, here is the video of my latest cone version. Three staged: Blue, gold with blue microstars and silver. I am really pleased with this effect. For the next one I planned for "suprise" a little starmine at the end.

 

 

Enjoy watching: http://pyrobin.com/files/Vulkan%20%28blau%2C%20gold%2Bblaumicro%2C%20silber%29.avi

 

 

For details feel free to ask.

[Oinikis]

dude thats awesome. this is basicly cone shaped fountain of what? also, have you ever tried, or you know, how that effect is made, when it shoots some stars from time to time?

[psyco_1322]

Downloaded the file an forgot to watch it till now, haha. Yeah that fountain was pretty nice, the blue part was deceiving at first, then the other effects kicked in and it really started going. I'm impressed, especially for it being a cone fountain!

[Pyroboy]

Hey thanks for your comments!

 

 

@ oinikis

 

It was a normal KClO4 blue composition (baechle 6) for the start. The other two stages were based on Chrysanthemum 6, without dextrin and with coarse charcoal (0-1000µm) and short milling time. The C6 was then treated with 3% paraffin oil and mixed up with 30% Fe (0-450µm, coated with petrolatum) for gold and 15 % Ti (sponge, 450µm- 1000µm) for silver. The blue micro stars were just added to the gold mix. I think I used about 10-15%.

The Cone was hand pressed and plugged with a cardboard disk and hot-glue.

 

 

@ psyco

 

Yeah, I really liked the smooth start. The end had an acceptable height of about 4 meters. The gold and silver part could last a bit longer, but there´s no more room to fill with composition.

[PyroCube]

How did you do that cone?

Hand rolled it?

Very nice vulcano, I appreciate it

 

Greets

[Pyroboy]

No, I used empty cones for yarn.

Like this one: http://www.ebay.com/itm/Lot-12-EMPTY-Used-Cones-For-Machine-Knitting-Yarn-or-Spinning-Weaving-yarn-unto-/111017192041?pt=LH_DefaultDomain_0&hash=item19d923ea69

 

 

Found 100 pieces for 15€, enough for the next few years .

 

They are not very strong (about 2-3mm), but they are useful for cones. for hotter mixes you can glue two of them together with water glass.

[Pyroboy]

Update!

 

After some working on cone fontains here are the results. I am very happy with them.

 

I changed the composition and tried to use some colors as "sparkler composition". There are also some special effects, but take a look at your own.

 

 

- just gold: http://pyrobin.com/files/cone%20fountaine%20gold.avi

 

- blue (30% Fe) to gold to silver: http://pyrobin.com/files/Blau%2C%20Gold%2C%20Silber.avi

 

- blue to gold + blue microstars to gold to bluie and white strobe starmine: http://pyrobin.com/files/cone%20blue%20to%20gold%20%2B%20micro%20to%20blue%20%2B%20strobe%20mine.avi

 

- green (15% Ti) to gold, to gold glitter mine: http://pyrobin.com/files/cone%2C%20green%20%2B%20ti%2C%20gold%2C%20glitter%20mine.avi

 

 

The third one got some microstar blue at the beginning. I know it burns too long.

The videos do not have the best quality (had to compress them) and are a bit out of focus. The blue colors are washed out by the camera. But the most effects look still great .

 

 

 

Greets

[schroedinger]

Nice one´s. liked the secon one the most. Keep up your god work with all that beautifull fountains

 

how did you make the golden sparks witch looked like dandelion seed´s, just by adding Fe?

 

How was the strobe performing in the movie you can see just two strobes and the last effect on the last one, did you construct it like a normal mine?

[boule]

Would it be possible to see your tooling and perhaps a short report on how you made those cones? Since there are cast and pressed variants, a little pointer would be interesting.

[mabuse00]

Very nice work

The strobe effect is my favorite.

 

 

Would it be possible to see your tooling and perhaps a short report on how you made those cones? Since there are cast and pressed variants, a little pointer would be interesting.

I second that.

 

Where theese handpressed with paraffin oil too? How does the mix consolidate with that rather weak compression?

 

I find this very interesting, because I mostly rely on ramming and (depending how much risk one likes/can afford to take, this mostly rules out putting perchlorate microstars and most metals in there.

[dave321]

can you share your compositions?

[Pyroboy]

The composition I use is based on Weingardts cone fountaine. Its BP with 12,5% charcoal and 12,5% sulfur. I use really coarse coal (about 0-5mm) and mill the mix just for a few minutes. It results in a coarse, slow burning green mix. This is the basic composition I use.

For the gold sparks it is mixed up with 3% paraffin oil and 30% iron grains of high carbon contend (3-3.2%) and a grain size of 300-600µm (specified by the supplier). For the silver sparks 15% Ti was used (450µm -1000µm). The paraffin oil protects the iron from oxidation and smoothens the composition. Like with whistle mix the sensibility is also reduced. Though the comp itself is not very sensitive, with the metal content makes me feel more comfortable. And its much cleaner to work with .

 

To make the cones no special tooling is used. As I said above I use empty cones for yarn. Two of them are glued together with waterglass. To supress the paraffin oil to soak into the paper, the inside is also painted with water glass (that is only important if the cones are stored for more than a few days). If you want to use colored compositions you should use potassium water glass of course .

 

 

http://pyrobin.com/files/240820131237.jpg

 

 

I made some kind of tool that helps cutting the top of the cones. A piece of PVC was drilled with a quick-helix drill to the desired size.

 

 

http://pyrobin.com/files/240820131238.jpg

 

 

This "tool" is also used to let the cone stand upside down. A small amount of basic composition with 3% paraffin oil is rammed into the cone as priming (just use a very small hammer or something else). With the paraffin oil the composition can be easily compressed. You don´t need much force.

After that a color composition is loaded and compressed carefully by hand. Use some round aluminum or brass rod. I use aluminum rods of different size, since the diameter of the cone changes during loading. You can carefully ram the comps just by using the weight of the rod (of course you should not do that with all comps ).

 

 

http://pyrobin.com/files/240820131241.jpg

 

 

I tried baechle 6 blue and glasswicks green for gerbs. But you may try others or just make some gold or silver cones with the basic composition.

 

 

After the color is filled, I started with the gold or silver comp by compressing stepwise increments of one tablespoon comp, then two tablespoons, then three...and so on until the cone was filled up to 1cm beneath the edge. One small spoon of loose comp is filled in the cone and then a heavy cardboard disk is rammed or pressed into the cone and fixed with hot glue.

 

http://pyrobin.com/files/160820131227.jpg

 

For the microstar comp I used the basic comp with 15% Fe and 15% blue microstars. The microstars were rolled on millet seeds and primed with green mix + 5% Si. The round shape helps minimizing the effect of pressure and friction, though the comp is only pressed by hand.

 

 

 

@ schroedinger

Its not exactly like a normal starmine. That would just let the cone explode. I used The basic comp with additional 25% corned BP and 50% stars.

 

 

@ boule

There are two things on cast cones I don´t like. The one is the drying time and the problems of something soaking into the paper. The other is that during the drying process there can form gaps or fissures between cone and comp, because the comp contracts.

 

 

 

And at last a pic some finished cones

http://pyrobin.com/files/210820131232.jpg

Edited August 25, 2013 by Pyroboy

[PyroCube]

Hey

 

Really nice work, keep it up !

I don`t know if I overread it, but how much composition was in each one of these?

I guess this gets quite expensive, especially with the high titanium content...

 

 

Greets

[Pyroboy]

It depends on the composition you are using of course. But I need about 200g for each cone. With Ti its quiet pricey, but with Fe it is low in price. I can get the Fe for about 2$ per kilo.