There are many types of fireworks, where one of the most common in firework displays is the aerial shell. The aerial shell is used in fireworks displays, and can be either a round or a cylindrical shape. These aerial shells are loaded into tubes, called "mortars." Once lit, the aerial shell will fly into the air and once the aerial shell is at the higest point (apogee), it will explode and shoot pyrotechnic stars in all directions.
In this instructable I will be talking about the procedure of assembling a round aerial shell.
Note: I do NOT recommend the average person to try this! This will be illegal to do without licensence in many cases, it is on your own response wether you do this legally or not.
When working with fireworks it is very important to use proper safety gear while making. It is recommended to wear faceshield or safety goggles during the making. While making the shell, one should do it away from heat souces, such as candles, cigarettes, stoves etc.
If I somehow throw around with a lot of foreign words or have any questions, feel free to ask me.
First, let's see what a typical round aerial shell looks like:
In this instructable I will be talking about the procedure of assembling a round aerial shell.
Note: I do NOT recommend the average person to try this! This will be illegal to do without licensence in many cases, it is on your own response wether you do this legally or not.
When working with fireworks it is very important to use proper safety gear while making. It is recommended to wear faceshield or safety goggles during the making. While making the shell, one should do it away from heat souces, such as candles, cigarettes, stoves etc.
If I somehow throw around with a lot of foreign words or have any questions, feel free to ask me.
First, let's see what a typical round aerial shell looks like:
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Signing UpStep 1: Shell parts
Let's start making the aerial shell (from now on it will be mentioned as 'shell')
Shell hemispheres
You will need two 3" paper hemispheres to make this shell. Note that the hemispheres themself are actually not 3", but smaller, since there must be room for pasting and quick match to make the shell fit in the 3" mortar tube.
Stars
A batch of 75 grams of 10 mm pumped "Tiger tail" stars were made for this shell, however only 70 grams were used. Remember always to make more than you need. It's better to have a bit more, than be needing. The stars were primed in meal black powder to ensure ignition. Since Tiger tail stars ignite easy, you might find that this might be unnecessary. If a 'rising comet' is desired, a 20 mm or 3/4" comet is pumped with the compostion. Make sure that the comet has a burn time equal to the time fuse or spolette (3 seconds).
Tiger tail stars:
Potassium nitrate..................44
Charcoal (Pine airfloat)........44
Sulphur....................................6
SGRS or Dextrin.....................6
Chemicals can be obtained at:
Skylighter.com
Bursting charge
'Meal coated rice hulls' was used in this shell.
Time fuse
A 'spolette' is a small tube, where black powder is confined in it. This will act as a time fuse, however one can also buy time fuse from such sites as:
Skylighter.com
Pasting
30-40 lbs kraft paper in ~70x15 mm strips are used for pasting the shell using the 3-strip pasting method. If another pasting method is desired, the strips might have to be longer or wider. A glue is needed to paste the strips to the shell. Wheat paste is a cheap solution that works well.
Find out how to make it at a tutorial I made:
Wheat paste tutorial
Wood glue thinned with water can be used, however it is much more expensive.
Lift charge
A lift charge is needed to shoot the shell out of the mortar. Approximately 15 grams of good granulated or corned black powder works well. More or less might be used depending on the quality.
Ignition
For igniting the shell either a piece of visco fuse and quick match or shoothing-wire and an e-match can be used. In this tutorial a piece of shooting wire and e-match was used. Note with this way you will need a power supply, and that you can not light the shell with a lighter
Other
You will also need lifting cup, paper tape, scissors, drill, "gummed paper tape" or kraft paper, tissue paper, brush, hot melt glue gun, cotton twine and string.
Shell hemispheres
You will need two 3" paper hemispheres to make this shell. Note that the hemispheres themself are actually not 3", but smaller, since there must be room for pasting and quick match to make the shell fit in the 3" mortar tube.
Stars
A batch of 75 grams of 10 mm pumped "Tiger tail" stars were made for this shell, however only 70 grams were used. Remember always to make more than you need. It's better to have a bit more, than be needing. The stars were primed in meal black powder to ensure ignition. Since Tiger tail stars ignite easy, you might find that this might be unnecessary. If a 'rising comet' is desired, a 20 mm or 3/4" comet is pumped with the compostion. Make sure that the comet has a burn time equal to the time fuse or spolette (3 seconds).
Tiger tail stars:
Potassium nitrate..................44
Charcoal (Pine airfloat)........44
Sulphur....................................6
SGRS or Dextrin.....................6
Chemicals can be obtained at:
Skylighter.com
Bursting charge
'Meal coated rice hulls' was used in this shell.
Time fuse
A 'spolette' is a small tube, where black powder is confined in it. This will act as a time fuse, however one can also buy time fuse from such sites as:
Skylighter.com
Pasting
30-40 lbs kraft paper in ~70x15 mm strips are used for pasting the shell using the 3-strip pasting method. If another pasting method is desired, the strips might have to be longer or wider. A glue is needed to paste the strips to the shell. Wheat paste is a cheap solution that works well.
Find out how to make it at a tutorial I made:
Wheat paste tutorial
Wood glue thinned with water can be used, however it is much more expensive.
Lift charge
A lift charge is needed to shoot the shell out of the mortar. Approximately 15 grams of good granulated or corned black powder works well. More or less might be used depending on the quality.
Ignition
For igniting the shell either a piece of visco fuse and quick match or shoothing-wire and an e-match can be used. In this tutorial a piece of shooting wire and e-match was used. Note with this way you will need a power supply, and that you can not light the shell with a lighter
Other
You will also need lifting cup, paper tape, scissors, drill, "gummed paper tape" or kraft paper, tissue paper, brush, hot melt glue gun, cotton twine and string.
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That is the biggest risk when working w/ pyro like this, because it is very hard to control, and will ignite very easily. Keep the ventilation up and the air damp. Ground yourself to the area, and DO NOT sit in a rolling chair.
Shell making enterprises in the US can't use nails in the construction of their wooden work tables, and use a fully sealed, and triple grounded electrical system. Every building has a copper plate which is grounded, which everyone touches on their way in and out of the building. Same thing on the storage magazines. Also have a ground chain and spike on the trailers, which get grounded at the site...
Seriously, static sucks...
Also, read NFPA 1123. Pretty much the gold standard on this.
Pyro certification can be had by passing the PGI exam, our regulating body. www.pgi.org
That being said, I am interested to learn how to produce "bottle rockets" and devices similar to what is known as a "mortar" at the local fireworks stand. I believe that would be enough to start.
Any suggestions on how to begin?
Oh, I am a mechanical tradesman, so such items as steel pipes (for launching purposes I would assume) and other related materials are readily available. I would think steel more reliable than cardboard tubes.
Please knowledgeably advise.
http://pyroguide.com/index.php?title=Bottle_rocket
The method is the same for bigger rockets, except one might use a hydraulic press to press them instead of ramming (3/4" or bigger).
The so called mortars are also described in this instructable.They are not devices themselves, but rather works as the canon to guide the aerial shell upwards.
I'm not exactly sure what you mean with the "colorful balls", but it sounds like aerial shells with colored stars instead of golden/charcoal that is described here. Colors are a bit harder to achieve and you will need to buy some more chemicals. Low cost and easy preparation makes charcoal stars ideal for beginners.
You could head to skylighter.com for materials as well as tools, and if you look in their newsletter archive, you should find a number of articles that explains constructions and formulas for various firework items.
If adding color is more difficult as you stated, then I will start with the simple stuff.
Thanks again for your help.
Mr. Tinker.
Thanks again.
http://www.atf.gov/forms/pdfs/f540013.pdf
None for us peons though.
If your loved ones were suddenly destroyed by the acts of a group that hated you simply because you are who you are, repeatedly, would you not have concern? They simply do not have the technology to reach where you are, otherwise you and your mates would be in the same boat with us.
God Bless, Friend.
For many, many years there was a continuous (and very much *real*) threat of bombings (I refuse, point blank, to call them terror attacks - an emotive term used to cook up unwarranted fear in the public) from the IRA in mainland Britain and in Northern Ireland. At no point were they called terror attacks and, for the most part, the were not used as an excuse to drum up mindless patriotism or to bring in draconian reductions in liberty.
The simple facts of the matter are that the terrorists currently active (in a shockingly low-scale way) are not attacking because of who we are; and that we (on the whole) have become insanely paranoid about it with no just cause whatsoever... mainly thanks to hysterical media outlets and governments keen to capitalise on freak events in order to further the overriding cause of all governments... control of the people through fear.
As for not having the technology to reach... the USA is about as far as it's possible to get from the middle east. If terrorists from that part of the world can reach the USA, they can reach everyone. Also note, technology didn't really come into it. They checked in as passengers and hijacked with knives. That's about as low tech as it gets.
The hard and brutal truth is that before 9/11 the USA, for the most part, was a very, very long way from terrorism whereas the rest of the world (ETA in Spain, IRA and UVF in the UK and Éire and many more besides) has a history of the same. It's new and shocking to many Americans, and far less so to the rest of us.
All said I love the States and the attitude of most of its inhabitants, so please don't take that as a dig, it really isn't. It's just a comment on the history of terrorism in places like Europe contrasted with that in the USA. There's no value judgment being made here.
If you can't accept what I've said, consider this... What were the three targets on 11th September 2001?
World Trade Centre (symbol of how America effectively runs the world's financial system)
Pentagon (symbol of America's military)
White House or Capitol (symbol of the government - that plane never reached its target, obviously)
Not schools, not sports stadiums, not Hollywood, Liberty Island, The Tomb of the Unknown Soldier or any other things representing the people of America or what they do... but targets related to the government, military and financial systems and what they do (or are perceived to do - the difference matters not) to the rest of the world.
Your government might tell you you were attacked for who you are, but the reality is THEY were attacked for what THEY are, but that won't sell things like Real ID and get everyone running to the government for protection.
I can't help thinking that looking at what the targets were and why the attacks took place should make it all easier to reconcile with things like basic common sense and what is really happening in the word.
I had intended this to be a brief response, but really, it's not something that can be explained in brief without sounding off the cuff.
The only thing the American people do wrong is to let the ruling class get away with making a mockery of the constitution... but there's not a terrorist outside the government that will attack the people for that.
Rest easy, you're not the target of the ones you fear... but maybe you fear the wrong ones.
God bless, Friend.
If you're not transporting for commercial purposes, and not transporting across state lines, you should be fine with your standard HAZMAT endorsement as required by your state DOT.
Storage requirements only apply if you intend to *store* the materials (note that I said "for immediate use").
If you're just building the devices for same day personal use, you really should be fine. I've been doing this for a while, and have never heard of a conscientious pyro getting any trouble for their hobby.
I'm not familiar with an ATF Display Operator Permit. I have display operator permits/certifications from NYC, PA (through my company), NJ, AZ, and DE, but have never heard of a federal operator permit. Can you provide a link so that I can get more information about it?
but it looked like a dodgy place so i didn't go in.
i just googled it and i think this is them
http://www.ajaxfinechem.com/
United Nuclear Scientific Supplies
It also has many other interesting supplies ranging from radio-active materials to high voltage power supplies and neodymium magnets. This is the site the mythbusters get their super magnets from. If that isn't a good endorsement I don't know what is.