Blaf Posted December 4, 2005 Share Posted December 4, 2005 Hi guys! I don't know how you call this type of the cracker...the most appropriate name in my opinion would be the jumping cracker. It is made of craft paper strip 6cm wide and some 25cm in lenght...more lenght, more cracks (or jumps, heh!). ' alt='' class='ipsImage' > target=_blank>' alt='' class='ipsImage' > width=360 border=0>href> The secret is a line of wetted meal (I applied it with a small paint brush) which goes along longer edge of the strip which is then wound several times and glued. ' alt='' class='ipsImage' > target=_blank>' alt='' class='ipsImage' > width=360 border=0>href> It looks pretty much like quick match tube. One end is then bent, thus making an end chamber.' alt='' class='ipsImage' > target=_blank>' alt='' class='ipsImage' > width=360 border=0>href> Whole tube is now zig-zagged as many times as the lenght allowes and a piece of fuse sticked into oposite open end.' alt='' class='ipsImage' > target=_blank>' alt='' class='ipsImage' > width=360 border=0>href> A piece of yarn or thin rope is then tightly wound around centre and cris-crossed around each segment of the snake-looking device. It is then left to dry for a day or so.' alt='' class='ipsImage' width="1000px" height="750px"> target=_blank>' alt='' class='ipsImage' width="1000px" height="750px"> width=360 border=0> When lit (and thrown), each segment loudly pops (or bangs, depending on how much paper is used) and has a nasty habit to impredictably jump around (hence the name) changing direction with each bang. Very nice effect I would say, eventhoug you never know where to hide! But this feature just gives a slice of charm to it, doesn't it? You can't miss with this one, believe me... Blaf Link to comment
nick Posted December 4, 2005 Share Posted December 4, 2005 Hey Blaf, I think you can refer it as "7 snapper"? we call it in dutch " 7 klapper" i'd never thougt to see it or hear from it again for that matter. we use to buy this kind a firework's for the holliday's I have to say, beautifully done. Greeting's Nick Link to comment
Oscar Posted December 5, 2005 Share Posted December 5, 2005 Don't the rope break after the first bang? It looks nice. How much meal powder do you have the use for it? Link to comment
Exhile Posted December 5, 2005 Share Posted December 5, 2005 Should this work with flashpowder to? I have just gotten another idea for new years eve, keep up the good work Blaf, And have you found Visco allready? Link to comment
Blaf Posted December 5, 2005 Author Share Posted December 5, 2005 The rope is tightened but not too strong Oscar. But if you leave it to dry enough it shouldn't be a problem...the blody stuff should burn through anyway. As for flash powder, I don't really know what to expect. Maybe it's too fast for this type of gadget so that all segments would burn in a snap. Heh, Visco - no, I did not try at all...but still collecting various parts to assemble my own simple Visco machine - I picked idea elsewhere on the Net. I'm running to aassemble my latest BP rocket, sorry! Blaf Link to comment
Oscar Posted December 6, 2005 Share Posted December 6, 2005 Thanks Blaf. I will try to make it after dinner. I post how it went. Link to comment
Blaf Posted December 7, 2005 Author Share Posted December 7, 2005 OK, I would very much like to see the outcome. Keep me informed about progress of your work. Blaf Link to comment
HellBound>LordOfDark Posted December 7, 2005 Share Posted December 7, 2005 I presume your meal powder was KNO3+S+C? did you wetten it with water? Or with something else? It looks nice btw:) When my chems are deliverd I'll try it gr, Hellbound>LordOfDark Link to comment
Oscar Posted December 7, 2005 Share Posted December 7, 2005 I tried it, but it looks smaller than your pics. I think i'm gonna made them 16 cm wide by 30 in lenght cm. Those look much better. Link to comment
HellBound>LordOfDark Posted December 7, 2005 Share Posted December 7, 2005 Maybe Blaf had more meal powder in it? Wich could increase the size I suppose... Link to comment
Exhile Posted December 7, 2005 Share Posted December 7, 2005 I presume your meal powder was KNO3+S+C I believe you don't understand the term "meal powder" compleatly, let me explain to you different types of blackpowder with the same ratio's First we have green powder, this is a very slow type of blackpowder with the chemicals rawly mixed with each other then we have meal powder, this is green powder that was wettened with some water and ballmilled At last we have black powder, this is meal powder that was ballmilled for a long time, wettened again and pressed in pucks with a consistency of 1.7 gram/cm^3. All of these comps have their own uses so as you can see, even BP isn't that easy 8) Link to comment
Blaf Posted December 8, 2005 Author Share Posted December 8, 2005 Exhile, don't be soo rigorous about the issue... Lord of Dark, yes, meal that I mention here is 75:15:10 mixture of (of course, what else...) KNO3, C, S ball-milled for two hours. The powder is consistency of talc powder after that. I took two small spoons of it, tossed into a coffee cup and wetted with fair amount of water. No alcohol was used this time. And so, I got a thick slurry that's usually used to make a black-match with addition of Dextrin...which is in this case omitted. So, Dextrin is not present here. It is basically a quick-match, just bent to make separate curved chambers. You can apply two layers of this meal slurry if you intend to make thicker tube. Oscar, my devices were made of moderately sized paper strip (6-7cm X 25-30cm) as I didn't want to make a lot of noise...but if you ask me, 16 X 30cm sounds too much for this type of stuff. Anyhow, I wish you luck guys! Blaf Link to comment
Oscar Posted December 8, 2005 Share Posted December 8, 2005 I will try agian. Thanks voor the information. I post how it went Link to comment
signet Posted February 8, 2006 Share Posted February 8, 2006 I tried the powder into water but the Sulfur keeps floating up.Did you guys encounter this or you got different? I dint get the powder to burn very fast. Link to comment
Nitroglycerin Posted February 8, 2006 Share Posted February 8, 2006 To wetten with water doesn't mean all soaked wet, it has to be a bit wet, so don't put 100 ml water in you're ball mill, you can spray it with a "flower shower" (I don't know what's the English word for it) this is a pic.: and after ball milling you have to dry the MP, after you have done that you can compress it to BP. Link to comment
signet Posted February 9, 2006 Share Posted February 9, 2006 thanx man! no wonder mine didnt work so well. Link to comment
Blaf Posted February 11, 2006 Author Share Posted February 11, 2006 Nitro, that's the right stuff indeed! I regularily use a small sprinkler remained from nasal drops (you know, when you get a flu or something, your nose gets stuck and magic drops clear it so that you can breathe freely again...) as I never make large quantities of anything pyro. Well, it's OK for now but if I ever increase production, one of those large sprinklers will do for sure... Blaf Link to comment
yellowcard Posted February 11, 2006 Share Posted February 11, 2006 @ Blaf, I just made the thing you posted here. When i lighted it, al the powder burnd at once, no bangs. What did i do wrong ? Link to comment
Blaf Posted February 12, 2006 Author Share Posted February 12, 2006 Maybe, but just maybe your device wasn't squeezed in the middle as tight as it should have been. Try to tight up the rope...I can see no other reasons unfortunately. The burn speed of your powder shouldn't make problems except increasing or decreasing the frequency of cracks. Sorry, that's the only diagnostics I could make from this far... Blaf Link to comment
the antverpian pirate Posted March 16, 2006 Share Posted March 16, 2006 I also made three crackers yesterday they dont look as nice as yours blaf but i do hope they will work. I only have made em a bit to small 20 cm on 6 cm so i only have 5 snaps if they work but well see. I did make one mistake and therefore i think they wont work and that is that i drowned my meal accidently i have such a nice plant spray and i only sprayed once in my disch where the meal was in it but it still looked very dry so i sprayed a bit more but unfortenaly the water al collected beneath my meal so when i tilted my dish a bit i saw a lot of water under my meal :cry: So i tried to get most of it out by holding a tishui(somthing to whipe your nose with)in the water and this absorbed most but also a litle bit of meal. The only thing im wondering about now if the kno3 would be disolved in the water and absorbed by my tishui? But i put in enough so that the water accident schouldn't be that much of an influence i hope but well see this weekend then they should be properly dry. Pirate Link to comment
Blaf Posted March 16, 2006 Author Share Posted March 16, 2006 You should have mixed a small percentage of Alcohol with water. It has something to do with surface tension of the water and when you add alcohol it softens so that meal particles could soak up. Try that next time... Blaf Link to comment
the antverpian pirate Posted March 16, 2006 Share Posted March 16, 2006 Ah i alyet thought that there was somthing wrong. But because in the tutorial it just says wetted meal i thougt it only was with watter i schould have known better. This afternoon im gona get the burning alcohol so ill try again :wink: Pirate Link to comment
Blaf Posted March 17, 2006 Author Share Posted March 17, 2006 Whatever you do, leave your "snappers" to dry for a few days...if there's still moisture present, they won't crack but just puffff... Blaf Link to comment
the antverpian pirate Posted March 17, 2006 Share Posted March 17, 2006 Ok il let them dry for a while, this evening im going away for the weekend so then i have to leave them for later anyway so by monday they wel be dry i hope. I also used water/alcohol for my second try and that went much much better i only am surprised at how many meal you put in, therefore i think that my first three crackers wont work but ill test them anyway. I also wil try to put a picture online from one cracker he looked kind off nice so ill share it with the rest of you guys and if i can find out how il post a video of the effect if there's one that workes offcoarse Pirate Link to comment
the antverpian pirate Posted March 22, 2006 Share Posted March 22, 2006 Ah i just tried one and it worked It was one wich was made with the water/alcohol mix. Pirate Link to comment
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