ryanlg95 Posted November 13, 2012 Posted November 13, 2012 Hey guys,Bit of a stupid question but I'm looking at buying some Magnallium for MgAl/KNO3 flash and this website says "Magnallium -60 +300 mesh". Does that mean it is 60 mesh or 300 mesh?Cheers
Algenco Posted November 13, 2012 Posted November 13, 2012 both,and everything in between, it consists of particles less than 60 mesh (-60) and larger than 300 (+300) passes through a 60 mesh screen and sits on a 300
ryanlg95 Posted November 14, 2012 Author Posted November 14, 2012 If that is the case would it be suitable for MgAl/KNO3 Flash?
dan999ification Posted November 14, 2012 Posted November 14, 2012 whats wrong with perc/al?If you are buying chems specifically for flash get some good al.Ive used 60-300 with perc 50/50 scary stuff, it is also heavy you use less with german or indian flake, saving money and fingers. Dan.
ryanlg95 Posted November 19, 2012 Author Posted November 19, 2012 whats wrong with perc/al?If you are buying chems specifically for flash get some good al.Ive used 60-300 with perc 50/50 scary stuff, it is also heavy you use less with german or indian flake, saving money and fingers. Dan.I live in Australia and finding perc is rarer than hen's teeth. So I'm limited to a nirate based one. I have tried KNO3/S/Al 5:3:2 and also 5:2:3 but never get good results with 200mesh Al 1
Potassiumchlorate Posted November 19, 2012 Posted November 19, 2012 I think magnalium is more powerful. Magnesium is the most powerful fuel. You can get it "over the top" by milling the potassium perchlorate with potassium dichromate for one hour, 10:1. The dichromate works as a catalyst for the perchlorate.
Shadowcat1969 Posted November 19, 2012 Posted November 19, 2012 I live in Australia and finding perc is rarer than hen's teeth. So I'm limited to a nirate based one. I have tried KNO3/S/Al 5:3:2 and also 5:2:3 but never get good results with 200mesh Al 200 mesh aluminum is VERY large for this purpose, from everything I've ever experienced.
kilnj69 Posted December 3, 2012 Posted December 3, 2012 I'm from australia too, been trying to find potassium perchlorate for over two months now and I am about to give up. And i'm not keen on making chlorate from boiling down bleach and adding KCL and all that. I know there's alot of colors and effects made with just Charcoal, KNO3, Sulfur, Dextrin ect. Am interested in that white star comp I seen a while back with KNO3, also I did just get some 50/50 250mesh MgAl, 400mesh Al and ~60mesh Ti sponge. Hmmmmmmm
MrW Posted December 3, 2012 Posted December 3, 2012 Hi Kilnj69 & ryanlg95. Try http://kbsupplies.com.au/store/index.php I see that they sell in Australia. There are other sources where i get mine in Oz, but haven't tried KB yet. Cheers
Algenco Posted December 3, 2012 Posted December 3, 2012 Hi Kilnj69 & ryanlg95. Try http://kbsupplies.co...store/index.php I see that they sell in Australia. There are other sources where i get mine in Oz, but haven't tried KB yet. Cheers ouch!!! I realize that pyro supplies are hard to get in Aus, but $70 kilo for kclo4?
MrW Posted December 3, 2012 Posted December 3, 2012 The joys of being an island in the middle of nowhere, with the government and their rules. It makes most things harder to get, even visco is a process of dodging customs... 1
kilnj69 Posted December 3, 2012 Posted December 3, 2012 (edited) Wow $70AUD for a kilo . Thanks heap MrW, I have been looking every where and have heard of kbsuppies but I think I was barking up the wrong tree as I spent at least four hours looking for diversehobbies only to find out they closed around april this year. EDIT: MrW, Yes Visco is impossible to get and really my Blackmatch (through alot of trial and error) is very reliable but burns fast ~20mm/per second and skips abit but if I coat it with nitrocellulose laqure (homemade) to use as normal fuse, burn rate is still fast but around 8mm/per second. Edited December 3, 2012 by kilnj69
MrW Posted December 5, 2012 Posted December 5, 2012 My Bmatch is usually 2 srtands joined in the process, once dried i put 2 coats of homemade NC. This takes it from about 20mm/sec to 5-10mm/sec. I looked at using BM coated with hot glue. Works well, only its unreliable. my results on a 80mm length of BM was 4-5sec uncoated and upto 12sec coated.
Zumber Posted December 5, 2012 Posted December 5, 2012 what is 100-325 mesh aluminium for winokur glitter??does it mean coarse??if it passes through -325 mesh(which would give finer powder than 100 mesh) then how come it will seat on 100 mesh??
Algenco Posted December 5, 2012 Posted December 5, 2012 what is 100-325 mesh aluminium for winokur glitter??does it mean coarse??if it passes through -325 mesh(which would give finer powder than 100 mesh) then how come it will seat on 100 mesh?? 100-325 means it passes a 100 mesh screen but sits on the 325, mixture of sizes
Zumber Posted December 6, 2012 Posted December 6, 2012 Thank you Algenco....I have extremely finer grade atomized aluminium and also have aluminium turnings from lathe machine so can I use alumining turnings by grinding it and passing it through100-325 mesh??
Seymour Posted December 7, 2012 Posted December 7, 2012 (edited) You could, assuming you have the equipment to do it and understand the risks of grinding reactive metals. However the fact that making metal powders because it is easier than buying it does not happen says something. People make metal powders at home for the challenge, or because they think they are unavailable. Much easier to buy them in my opinion. How much finer is the Al you currently have? Edited December 7, 2012 by Seymour
Zumber Posted December 7, 2012 Posted December 7, 2012 @seymour-I exactly dont know what mesh my finer aluminium is, but it almost floats on air.....I also have no problem grinding aluminium turnings because it is much thinner that if rubbed between two palms it breaks into piecesso I can easily grind them. the same aluminium turnings I have been using in my flower pots for white sparks, I hope it could also works in glitters.
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