Pirotehnika-Pirotehnicke supstance(obavezno procitati prvi post)

[livija]

[font=&quot]it has come to my attention that the chinese r making bigger n bigger assortments of festival balls (or “artillery shells” or “reloadables”) but still supplying just one or two measly little mortar tubes for them (virginia, the TUBE is the mortar, not the little thingy u drop down in them what goes boom in the sky—that little thingy is called a SHELL). this leaves u with a lotta shells to reload, which can be slow n boring. so at this time of the year, it is critical that i point out to u several items for you reloadable shells junkies.[/font]
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1. shell size: those shells come in a variety of dimensions n shapes.

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consumer fireworks shells r sold as “festival balls,” “artillery shells,” or “reloadables”
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there is no standard-sized chinese festival ball. they typically vary from around 1.67 inches in diameter, all the way to 1.88" or more. well, for one u might be asking yourself if u can get extra mortar tubes from sky-lighter. n if u r, u need to know which tube to look for. so, measure the outer diameter (OD) of the largest of your reloadable shells. measure the "widest" part , where the fuse goes around the shell. write that dimension down.

2. mortar options: if u make scrounge your own mortars, do not use PVC pipe. PVC becomes dangerous shrapnel when it shatters. n these shells can n do accidentally explode in a mortar. u would not belive how brittle n sharp PVC can be when it is exploding at u at 500 miles an hour.
to get festival ball mortar tubes from sky-lighter, u have two basic options: cardboard or plastic. if your shells r less than 1.74 inches in diameter, n u wanna spend the least amount of money, u can use TU2100, festival ball mortar tube ($32,43 per 25), 1.75[font=&quot] inches inside diameter, 10 inches long (that is plenty enough). your shell has to be smaller than 1.75" so it will slide down the tube freely. your other option, n your best one, in my opinion is to use Pl3170 high density polyethylene (HDPE) festival ball mortar tubes. these r inustrial-strength, professionally made, wooden-plugged tubes, which should last u a lifetime. u can fire any size festival ball out of these things. tradeoff: they r more expensive, 6 for $24.95.[/font]
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[font=&quot] 3. i got all these mortar tubes; what to do with 'em?[/font]
[font=&quot] let's look at options at a time. before u make anything, make sure your shells fit your tubes. try several. they should drop down the tube freely, by just lowering them holding the fuse. if any r just a little snug, u can often roll the fuse side of the shell against something smooth like a counter top, pressing down on the shell as u do it. try n press the fuse a little flatter. then try n drop the shells into your mortar. when u load your mortars, be sure the shells go all the way down to the bottom. if a shell does not go all the way down, u will either get a low break, possibly injuring someone or starting a fire, or even a flowerpot. a flowerpot occurs when the shell doesn't lift out of the mortar, n explodes in it. both conditions can be dangerous. so make sure, when u load your mortars, that all shells r firmly seated on the bottom of their tubes.[/font]
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[font=&quot] 1) make a cardboard tube mortar rack.[/font]
[font=&quot] TU2100s don't come with plugs in them. forget using plastic bases-most of them blow apart the first time u use them. n no, our paper caps n plugs rn't made for this. here's what u do. get u an adjustable hole cutter/drill/bit. then get u a piece of 2x4 about as long as u want. cut round holes in the 2x4 about 1/2 inch deep just wide enough to hold one mortar tube. they can be holes or grooves. either will work. your tube should fit into the hole snugly. cut as many holes as u want. using white/carpenter's/Elmer's glue, glue yer tubes down into the holes. let 'em dry for a day. u have an el cheapo mortar rack. if u want to reuse your rack next year or after, first dip/roll your cardboard tubes in an oil-based varnish n let dry. this seals 'em up, n keeps moisture from causina them to unravel.[/font]
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[font=&quot] 2) make a milk carton plastic tube rack.[/font]
[font=&quot] see fireworks tips #52,[/font] “El Cheapo 30-Shot Festival Ball Rack” for details on how to make a quick n dirty festival ball rack using HDPE tubes. these make an awesome display. milk cartons can be had at staples and wal-mart. they’re different sizes and can accommodate different numbers of tubes, but 20-30 of our PL3170 mortars is typical.

milk carton morator rack using PL3170 HDPE tubes
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3) buy a ready-made rack.
there is an incredibly well made wooden rack, which holds 6 HDPE tubes in a fan shape, PL3175 Festival Ball Mortar Rack. they have folding stabilizers on the ends to keep them from tipping over, even if the ground is uneven or on a slight slope. they r the best for spreading your shells all over the sky.

4) how to fuse shells?
this answer has two parts.
1- how to connect fuses: this is an easy answer. just tape your two fuses side by side. in the picture below, ¾” wide masking tape is used. the important thing is to have the fuses touching each other inside the tape. the type of fuse shown is called visco fuse.

connecting two visco fuses
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[livija]

2- how to chain fuse festival balls using visco fuse: chain fusing is simply connecting a number of devices together so that they fire one after the other in some intended sequence. u chain fuse festival balls when u want to fire more of them at the same time, or if u don’t want to light them all individually, or because u want to create some visual effect in the air. or u could chain a rack of shells so that many of them would fire within a few seconds for a finale to your fireworks display. the possibilities r limited only by your imagination. so, let’s see how a milk crate rack might be chain fused. we’ll use different colors of visco fuse so you see which fuses do what.

using the milk carton rack, shown in the picture above, notice there are 4 rows of 5 mortars, n one row of 4. u can make different kinds of chains each row. here’s what they would look like using red visco for the main fuse. the green fuses all go to shells.

the centers of the mortars are 2.5 inches apart, so in this example, we’ll make a simple chain with shells chained at 2.5-inch intervals. first cut a length of fuse about 2 inches longer than your row of mortars. with a magic marker, starting at one end, make a mark every 2.5 inches. tape the shell fuses at each mark. the finished chain looks like this.

festival ball fuses chained to visco
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3- how to make a faster burning chain: the chain we made in step 2 above is relatively slow burning. but suppose we want to make the shells fore almost all at one time, using visco fuse. just join the ends of all the fuses, octopus style. tape them together really tightly. then insert a 6-inch length of visco into the middle of the bundle like this. use another piece of tape to securely attach the 6-inch visco to the octopus bundle.
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joining 5 festival balls in one place
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your chain should now look like this:

5 festival balls fuse n timed to go off at the same time
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when you lower this chain into the mortars, you’ll find that the shells don’t go all the way to the bottom of some of the tubes. Don’t worry. When the fuses burn past the taped connection, they will drop to the bottom of the mortars before they fire.

4- how to chain fuse shells using quickmatch: quickmatch burns almost instantaneously. so the shell fuses in this chain will all light at the same time. these shells will all leave their mortars within a half second or so of each other. first, cut a length of quickmatch using a razor blade knife the same length as u made the main visco fuse in step 2 above. (do not use scissors to cut quickmatch, as their friction has been known to ignite quickmatch!) then attach a two-inch piece of visco to the end of the quickmatch, using masking tape to attach it securely. using a razor blade knife or scissors, make an incision in the quickmatch about an inch or so from the attached visco, making sure that the black match inside can be seen.

cut a slit in one side of the quickmatch
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then, insert about an inch of the shell fuse into the quickmatch, with the end of the shell fuse pointing in the direction your fire will be coming from (toward the visco). this is important: because fire travels down quickmatch so fast, u want that fire to hit the exposed end of your shell fuse, rather than travel past it, if it’s facing the wrong direction.

insert fuse in quickmatch toward the fire
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then use masking tape to securely attach the fuse to the quickmatch. if the connection is secure enough, u should be able to pick up the whole finished chain, n no shells will come loose.

use several wraps of masking tape
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when your chain is finished, it should look like this:

quickmatch chain. note visco fuse on right side
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when u have finished making chains, u can either fire them individually, or chain your chains together. here’s how they look chained together with fast yellow visco loaded in the milk carton rack. it’s ready to fire, and all that’s needed is to light one fuse.

festival ball rack loaded with chained shells​

 

[winkler]

EMLJUDI TEK SADA SAM VIDEO JEDNU KARDINALNU GRESKU.NE KAZE SE PREHLORAT NEGO PERHLORAT(TO SU SOLI PERHLORNE KISELINE).
VELIKI POZDRAV ZA KOLEGU NITRO.

 

[kennedy_bakircioglu]

ja sam nasao ekstra recept za dimne bombe
secer, potasium nitrat, soda bikarbona...
ali ne mogu nidje da nadjem KNO3

mislio sam da je to salitra i da se kupuje u poljoprivredne apoteke, ali sam izgleda kupio 3 kg pogresne salitre, valjda one natrijumske, djubriva

razgovarao sam sa vjestakom poljoprivredne struke i nije znao da mi kaze dje da kupim KNO3.

ako neko zna, dam mu recept za dimnu
u 3 boje (narandzaste, plave i bijele )

 

[senzala]

Gde mogu da nadjem kno3 na novom beogradu trebami za raketicu?

 

[kennedy_bakircioglu]

ja vec nedje napisah da je kno3 skoro nemoguce naci kod nas
ono sto imas u poljoprivrednim prodavnicama nije kno3 vec neka druga salitra

 

[senzala]

ja vec nedje napisah da je kno3 skoro nemoguce naci kod nas
ono sto imas u poljoprivrednim prodavnicama nije kno3 vec neka druga salitra

e ja sam danas našao šalitru na zelenom vencu i to je prava šalitra i isprobao sam je i raketice super lete

 

[senzala]

E NITRO PROBAJ SA KALIJUM NITRATOM(KNO3) I SA ŠEĆEROM.TRBATI 150g KALIJUM NITRATA,150ML VODE I 100g ŠEĆERA .TEBA TO ŠVE DA KUVAŠ DOK NEPOSTANE KAO PLASTELIN
NAOPOMENA:KAD TO BUDEŠ PRAVIO NI SLUČAJNO NE RADI U ZATVORENOM PROSTORU I NA OTVORENOJ VATRI

KALIJUM NITRAT MOZEŠ KUPITI U BILO KOJOJ POLJ.APOTECI

KALIJUM NITRAT JE POZNAT KAO ŠALITRA

OVO TI JE SUPER ZA VATROMET

 

[winkler]

Prvo nije tacno da se KNO3 ne moze kupiti u poljoprivrednoj apoteci.Prodaje se u pakovanjima od 2 kg-a.Ja sam skoro kupio jedno takvo pakovanje.A i nije ti preterano bitno da li je u pitanju kalijumova ili natrijumova salitra jer su oba odlicni oxidansi u pirotehnickim smesama(natrijumova salitra je neznatno higroskopna).Poydrav

 

[kennedy_bakircioglu]

respect
ja kazem da natrijumove ima na svaki cosak ali kalijumove nisam nidje nasao

jel tacno da su podjednako dobre?

doma imam 4 kg natrijumove, pa da se ne baci, iako je bas jeftina?
i da, koliko kosta kno3?
natrijumova je oko 1€ / kg

 

[BOMBERMAN]

kno3 mozete naruciti na sajt www.highqualtychems.com ! A ima i ostale hemikalije za pirotehniku... Pozzzz...

 

[Mil96]

Molim vas neka mi neko kaze gde tacno ima salitre(bilo koje)!!!!

 

[kennedy_bakircioglu]

u bilo koju poljoprivrednu radnju...

 

[mladjo11]

sinoc sam cuo novi recept od brata (bomba)

U flasi od 0.5 L uspite 7cm sitno isjeckanog aluminijuma (Al,aluminijska folija) i jos 2cm solne kiseline,
brzo zacepite flasu i bacite je daleko od sabe (jako,jako daleko,vjerujte mi,za vese dobro) i sacekajte,ako ste sve uradili kako treba na redu je...BOOOOM.........

 

[MikY^]

Ja sam bio u poljoprivrednu i kazem treba mi KNO3 prodavac me gleda ja kazem salitra on isto ja opet kazem vestacko djubrivo i zabunim i nase i njihove i odem iz prodavnice.E sad on mi je pokazao pakovanje od 2 kg u granulama . Kazite mi sta da kazem u prodavnicu da bih dobio KNO3?

TREBA MI ZA DIMNU BOMBU ILI ZA RAKETICE
PLS ODGOVORITE HITNO JE HVALA SVIMA

 

[MikY^]

sta da kazem koje vestacko djubrivo ima 100000 vrsta ja sam iz novog knezevca opstina kikinda pa sta tacno da pitam plz kazi mi ????

 

[BernardBlack]

a na Hemijskom fakultetu mozda?

 

[MikY^]

Kalijum nitrat u prahu to mi treba za dimnu bombu kolika je cena i da li se to tako kaze??

 

[BernardBlack]

a ne stvarno pitaj na fakultetu, oni te jefitinije supstance imaju dosta, a ti kaziu da cesh da platish. tamo su barme ciste supstance.

 

[kennedy_bakircioglu]

ja ti mogu dat adresu sajta na koji mozes da narucis
i bas je jeftino
ali nije domaci nego strani

 

[MikY^]

kazacu vam danas oko 19h idem prvo do poljoprivredne da pitam za kalijum nitrat pa ima 3 poljoprivredne

 

[MikY^]

bio sam u 3 poljoprivredne i nema nigde u jednoj ima kalijum nitrat ali u dzaku od 25 kg to mi netreba a i nemam novaca i sta sad???
Da li moze KALCIJUM nitrat umesto Tog KALIJUM nitrata???

 

[shiljatbl]

jel zna neko gde bi mogao nabaviti organsku boju u prahu,posto mi treba za dimnu bombu....

 

[nissan]

Sta je hydrochloric acid, da li je to isto sto i sona kiselina (hlorovodonicna kiselina)

 

[Ben_Adam]

Sta je hydrochloric acid, da li je to isto sto i sona kiselina (hlorovodonicna kiselina)

Hydrogen - vodonik. Chlorine -hlor. Hlorovodonična, da.