Kamuro

[llamazares]

Does anyone know a good kamuro formula?

 

It looks like a formula very difficult to find in factories, pyro-books and the web.

It is a secret how to make a good KAMURO ???

[cplmac]

Good question, I would like a good brocade formula as well, very similar to the kamuro.

[llamazares]

Someone have the gentility in answer to cplmac and me,

for the KAMURO effect /a goood Brocade formula?

 

(to look the picture as horse tail; as golden threads, falling down, slowly...)

 

Absolutely beautiful.

[Mumbles]

Theres another thread about it that you already started with some formulas in there.

 

http://www.apcforum.net/forums/index.php?showtopic=858

 

Probably the best way is just experimentation. Take a streamer that you like and keep adding charcoal or other fuels(metals) until you get it how you like it. Replacing sulfur with charcoal will also do the trick in charcoal streamers.

[llamazares]

It is true, friend Mumbles.

 

Since then, I go trying this softly effect. And you I swear that I have done multiples tests for weeks. Months. Without success. The motive of opening here this new thread is because I am desperate.

 

Forgive me, please. But not you do not close the thread, when see the pyro teachers think what....

 

All my tests(essays) with BP, charcoal, lampblack, metals (Ti- Fe/Ti) etc ... they have failed nowadays.

 

Nobody says exactly what is the kamuro. ¿How to make KAMURO?

 

¿Is the same effect that Brocade? (threads golden/ silver to fall slowly)

 

Nothing in the web.

Nothing in the books...

 

"When the flame of powder toucheth the soul of man it burneth exceeding deep" - attribute to Roger Bacon-

[Mumbles]

Well, obviously you don't have very good books if you can't find anything.

 

Try Hardt, BAFN 2, and Lancaster for a definition. Hardt gives straight out formulas, and BAFN gives an imitation formula.

 

Perhaps you should share what tests you've tried and their result, and maybe I'll share with you the formulas. I honestly have my doubts as to if you've even attempted anything.

[cplmac]

Brocade is basically a very bushy gold dust.

[llamazares]

hiFk

[llamazares]

Mumbles

 

Your words:

 

"Perhaps you should share what tests you've tried and their result, and maybe I'll share with you the formulas. I honestly have my doubts as to if you've even attempted anything. "

 

 

do not doubt my honesty, please...

 

 

"Try Hardt, BAFN 2, and Lancaster for a definition. Hardt gives straight out formulas, and BAFN gives an imitation formula."

 

You will share now your formulas, with me?

[Mumbles]

Well, I think I see your problem. You're using a fast BP base for the stars. This will result in a larger spray, but a shorter hangtime and faster burn rate. Perhaps try replacing half of the milled BP with just screened together BP components. There will be a slower burn and longer hangtime.

 

As far as the formulas I'll think about it. All I really see from you is formulas you've found, nothing you've really experimented with.

[llamazares]

Perhaps try replacing half of the milled BP with just screened together BP components.  There will be a slower burn and longer hangtime.

Mumbles:

 

I believe that it is not a question of percentage-screen-mixing.

The authentic kamuro made in Valencia (Spain) similar the two formulas of above tried for me, is made with BP strong ball mill, to reach sufficient temperature to fuse the metals and to provoke the soft thread of thin spark-long hangtime. (To look Photo)

Possibly it works with Antimony Trisulfide o and not with antimony METAL. But without a real guide, to obtain the effect of the initial image, is to give blind person's sticks...

 

I believe that the my continuous failures is general mixture of ingredients. The burning suffocates without golden / silver threads.

Charcoal and lampblack in excess?

 

Is a mystery... of moment.

 

But I will obtain it.

[Mumbles]

Just a few things before I get to the good stuff. Are you testing on the ground or in the air? You absolutly must test in the air or you will get no indication of preformance. I really have my doubts about them using a fast BP base. Perhaps if you milled all the BP chems together it would work better and slow it down some. Also, authentic Kamuro come from Japan. Kamuro means willow in japanese.

 

Now, if I see you ever asking for a certain kind of formula again, you had better show us some damn good research and tests. My kindness is a one time thing. Also, I would love to see some videos.

 

I'm in a good mood so here should be more than enough info.

 

From BAFN 2 pg 72-73 from David Blesser. If you don't follow the directions exactly, I can't promise it will work. This is a rolled star. I'm not 100% sure about the flitter core, it's given in %, but adds to 110%. 5mm star of the flitter. Roll everything with 50/50 Alcohol/water. 1mm 50:50 flitter/glitter mix. Now, here's the trick. The main composition is made from a mix of glitter and willow. The glitter leaves the metallic tail, and the willow leaves a long tail and slows the glitter down.

 

The streamer composition is made from a slowburning willow mix. The mix is ball milled for 24 hours, dampened with 20% water and passed through a 10 mesh screen and allowed to dry. Then the dried grains are put back in the tumbler for 2 - 4 hours. The resulting product should pass completely through a 50 mesh screen but should not be fine as flour. The wet granulation step greatly aids the spark density.

 

The main streamer composition is prepared from 1 part glitter mixed with 3 parts willow. Apply the glitter/willow mix to the cores until the star size reaches 11 - 12mm diameter. After these cores have dried in the shade for a few days I put them back in the rolling pan and bring the size up to 14mm with just the willow mix. Another finishing layer of meal powder, .5mm thick, is added to give a final size of 15mm.

 

1. Flitter Core

Potassium Perchlorate 40%

Aluminum dark (not German) 64

Dextrin 5

Boric Acid 1

 

2. Willow Comp

Potassium Nitrate 37

Sulfur 12

Charcoal 45

Dextrin 6

 

3. Glitter Comp

Potassium nitrate 50

Charcoal 20

Aluminum 12/LA (spheroidal) 9

Antimony sulfide 12

Barium carbonate 5

Dextrin 4

 

 

 

From Hardt:

 

Table 15-25

 

Formula 5: Willow

KNO3 - 35

Pine C - 45

Sulfur - 11

SRGS - 9

 

Formula 6: Brocade Willow

KNO3 - 29

Pine C - 34

Sulfur - 6

FeTi (mixed) - 25

SRGS - 6

 

 

Note that this is exactly what I said. Take a willow or charcoal streamer composition you like and keep adding charcoal or other fuels.