13 replies to this topic

[juggalo_pyro]

hey ya'll I got a couple of formulas I want to try and im kind of new at this so any changes or advise for theses would be appreciated thanks and of course they are in parts by weight

#1
powderd iron (Fe) 30 parts
strontium nitrate Sr(No3)4H20 50 parts
Copper carbonate Cu (OH)2 Cu CO3 20 parts

#2
potasium nitrate 50 parts
bluehead german aluminum 40 parts
Copper Carbonate 10 parts

#3
stontium nitrate 40 parts
sulfer 20 parts
200 mesh flake Al 40 parts

[karlfoxman]

Welcome,

Your spelling is terrible! Just read your profile, nice to see lots of swearing. Oh and whats bluehead aluminium?? Is it me or is strontium nitrate Sr(NO3)2? What is the 4H20? Did you test these compositions already?

[juggalo_pyro]

bluehead i do beliave is a slightly beter form of blackhead as for the compasitions i only know that from the pakaging and yes i know i have bad spellin g so just leave it be please

[karlfoxman]

bluehead i do beliave is a slightly beter form of blackhead as for the compasitions i only know that from the pakaging and yes i know i have bad spellin g so just leave it be please

I do recal bluhead aluminium so your ok with that, but please fix your spelling and foul language in your profile.

[JamesH]

Blue head aluminium is a type of german dark Al sold by Hummel Croton, it's called blue head because the top of the drum it was supplied in was blue in colour. Theres a bit of info on Rec. pyro on these various types of aluminium powders http://groups.google...3a7a0fc1344eb0e

Yeah, karl your right about the empirical formula for anhydrous strontium nitrate - Sr(NO3)2.

Juggalo pyro - you need to use anhydrous strontium nitrate for use in pyrotechnics not the hydrated type.

Edited by JamesH, 08 January 2006 - 10:41 PM.

[Richard H]

Juggalo, Please use a spell checker before posting. I found it difficult to understand your typing. Also please read the forum rules. We strongly discourage the misuse of fireworks and pyrotechnics, which your profile suggests.

[Frozentech]

Blue head aluminium is a type of german dark Al sold by Croton Hummel, it's called blue head because the top of the drum it was supplied in was blue in colour. Theres a bit of info on Rec. pyro on these various types of aluminium powders http://groups.google...3a7a0fc1344eb0e

Yeah, karl your right about the empirical formula for anhydrous strontium nitrate - Sr(NO3)2.

Juggalo pyro - you need to use anhydrous strontium nitrate for use in pyrotechnics not the hydrated type.

Hey James, thanks for that link, I was also curious about "Blue Head" Al. I had heard it was super fine mesh, but from what Mike Swisher wrote it was actually a 1/2 grade coarser than Black Head. Nice to know the origin of the nicknames too ! Hummel Croton had some reference to Black Head, Blue Head, etc as alternate names for aluminum powders, but never knew it came from the color of the barrel lid !

[koobee]

... I am at a complete loss as of the intended behavior of these formulas. I think for a fair analysis and revision it may be advantageous to know what exactly you intend to do with these.

P.S. You may wish to consider revising your profile, and perhaps rethinking the reasons you are here. Ex. To give pyro a bad name and blow yourself up... or to perhaps show some respect for the hobby and the law. No offense...

Edited by koobee, 09 January 2006 - 09:22 PM.

[adamw]

The concerns have been raised.

Also, yes, what do you hope to achieve with the formulas posted?

#1 - A purple perhaps?

I dont think the iron will even give enough heat to excite the strontium and give a red, let a lone a blue.. and there is no chlorine donor to product the colours. And a binder (dextrin etc) would be useful

#2 - A silver streamer? White?

Why bluehead? That's too expensive to use for a streamer and will probably give a good white, but why the copper carbonate ??

#3 - A red?

See #1 above - no Cl donor so the NaCl ions won't form, and you won't get a colour.

I know it sound like I'm having a dig.. and it is really good to see a newcomer try some new formulas, but some of the things don't make sense and it would be useful to have a basic grasp of pyro chemistry; ie why we need certain metallic fuels to get good colours, as well as a chlorine donor (ie KClO4 as the oxidiser, or Parlon as a fuel to help with the colours also). Almost all star formulas need a binder (such as dextrin, red gum etc) with will make you able to form the composition into a pellet as well as providing a fuel source.

[juggalo_pyro]

#1 yes I was looking for a purple
#2 was more of an experimental flash
#3bright red as for the Cl I have said it before I am a beginner her and came to try and gain knowledge on the subject and am not familiar with cl donors

[koobee]

As a begginner here you may wish to start off with simple basic formulas that have been thouroughly developed and tweak them carefully to your satisfaction.
Here is a simple purple by Dr. Shimizu
Potassium Perchlorate-------------61.3
Red Gum-----------------------------9.1
Basic Copper Carbonate-----------5
Strontium Carbonate----------------7.4
Parlon---------------------------------12.4
Dextrin--------------------------------4.8
Cut/Rolled

And here is a simple red by Blesser
Potassium Perchlorate-------------70
Strontium Carbonate----------------10
Red Gum-----------------------------15
Charcoal------------------------------1
Dextrin--------------------------------4

As for the flash, I STRONGLY recomend that you get in touch with a pyrotechnician in your area and perhaps learn under him the dangers and precations to be taken with flash. I have worked with flash for a mere four years and am still deathly afraid of it, especially after the incident in PGI, sorry if I wasn't supposed to mention that.

[adamw]

Come on koobee! Those aren't simple formulas!

The first ever star you should make should be BP based, with probably a bit of Alu or charcoal for a tail. And that's only after you have made some fountains, rockets, good BP etc.

Then you should try a simple colour, eg. red or green and then maybe try purple and THEN try some flash! (because you won't need it for any of the above)

[sizzle]

The first ever star you should make should be BP based, with probably a bit of Alu or charcoal for a tail. And that's only after you have made some fountains, rockets, good BP etc.

My first stars were a Blesser Red and D1 glitter. I suppose it depends how confident you feel when you decide to make your first batch, I had looked for advice on the forum and asked friends so I felt confident enough to produce these, if I didn't get the advice I required then I would probably only have made some BP stars.

[koobee]

yeah ok, your right they aren't that simple. I apologize. I do not have any bp formulas with me right now. I should have posted different formulas but I guess the point I was trying to get across was that he might want to start with some simpler stars and modify them slowly to his satisfaction.