pyrojig Posted February 27, 2012 Posted February 27, 2012 My favorite way to screen slice is with a "Home Depot" Light Defuser panel. My local HD has 1/2'' and slightly less than 3/4'' square panels. Take a square of this panel and cut it to a usable size, eaither frame it or put 2 thin dowels under the edges ( a diameter dowel that is 1/2 the finished diameter of your stars ). Place a layer of prime on everything then place your primed patty on top, use a square of plywood . This is a overly sized star for a parlon comp. 1/2 stars would burn to the ground unless your shooting them out of 10 or 12" shells. The burn time would be very long. Charcoal stars are much better using the light defuser method.
jimbo Posted February 27, 2012 Posted February 27, 2012 True Blue Pyro has a comp that I use a lot, it is "True Red" and is very bright and long burning. Deep, deep blood red, beautiful. I have had no issues with ash on anything but a green comp that I abandoned because of the slowness of the burn. -dagI'll have a look at truely red,the acetone/parlon bound green pistil in this shell seems dim http://youtu.be/2c40_hCmbL8 and you can see the orbs in this test shell this one was dextrin bound so the green was brighterhttp://youtu.be/QdYnPYl-wVM
Potassiumchlorate Posted February 28, 2012 Posted February 28, 2012 This is a overly sized star for a parlon comp. 1/2 stars would burn to the ground unless your shooting them out of 10 or 12" shells. The burn time would be very long. Charcoal stars are much better using the light defuser method. Not with a high metal content. My parlon stars burn out within 1-2 seconds, and they are up to 1" in size.
dagabu Posted February 28, 2012 Author Posted February 28, 2012 This is a overly sized star for a parlon comp. 1/2 stars would burn to the ground unless your shooting them out of 10 or 12" shells. The burn time would be very long. Charcoal stars are much better using the light defuser method. 1/2" parlon stars are good for 8" shells but are too big for small shells due to the burn time as you have said. I use 1/4" to 3/8" parlon stars in my shells. -dag
Potassiumchlorate Posted February 28, 2012 Posted February 28, 2012 What kind of parlon stars do you make? Mine burn incredibly fast.
pyrojig Posted February 29, 2012 Posted February 29, 2012 I use a bit less magnalum . The lower % Im sure contributes to the slower burn time. Thanks for the clarification Dag. I guess I was just a bit off on shell size to star size...
dan999ification Posted February 29, 2012 Posted February 29, 2012 (edited) for 3" shells, 1.5-3" mines, 40mm bombettes i have used cut stars at and over 1/2" if ti is added to the comp they can be as big as 20mm and over to make up for the fast burn.[ i dont think "parlon" stars suit me, i like big stars.]these were veline stars bound with acetone, what is the difference between "parlon" stars and veline?, obviously quite a bit if they burn that slow, i'll have to look at the comps closer. dan. edit: even the bigguns burn faster [20mm 3 secs ish]than a hard pumped tigertail comet of the same size [5 secs ish] Edited February 29, 2012 by dan999ification
Potassiumchlorate Posted February 29, 2012 Posted February 29, 2012 (edited) Veline stars have just a few percent of magnalium in them. Bleser's Mg stars with 18-30% magnesium 100-200 mesh burn incredibly fast. My own magnesium is 250 mesh, by the way - the coarsest. The finest is 370... Edited February 29, 2012 by Potassiumchlorate
dan999ification Posted February 29, 2012 Posted February 29, 2012 Bleser's Mg stars with 18-30% magnesium 100-200 mesh burn incredibly fast. big dahlia
TheArchitect23 Posted February 29, 2012 Posted February 29, 2012 Note to self. Use less magAl slower burn.
pyrojig Posted February 29, 2012 Posted February 29, 2012 big dahlia Expensive Dahlia ........ But impressive , I'm sure.
Potassiumchlorate Posted February 29, 2012 Posted February 29, 2012 Oh, most of Bleser's Mg stars utilize only nitrates as oxidizers. What costs is the magnesium. Half a kilo 20mm stars, which is what is needed for a 6", costs about €5, except the yellow ones with potassium perchlorate. Pretty decent in my humble opinion.
dagabu Posted February 29, 2012 Author Posted February 29, 2012 What kind of parlon stars do you make? Mine burn incredibly fast. These: -dag
Potassiumchlorate Posted March 1, 2012 Posted March 1, 2012 (edited) Hm, my "ordinary" parlon stars are: Red Strontium nitrate 37Potassium perchlorate 30Magnesium 14Parlon 14Red gum 5 Bleser White Mg Barium nitrate 53Potassium nitrate 12Magnesium 28Parlon 7 Bleser Red Mg Strontium nitrate 55Magnesium 28Parlon 10PVC 7 I think it's the magnalium. I know one guy who mills his magnalium until it's finer than 1200 mesh! Edited March 1, 2012 by Potassiumchlorate
pyrojig Posted March 2, 2012 Posted March 2, 2012 That will do it. Small magnal will cause the burn rate to increase substantially .
Potassiumchlorate Posted March 13, 2012 Posted March 13, 2012 Has anyone tested toluene instead of acetone? They say in Best of AFN II that acetone always contains some water but that toluene doesn't. I made 500 grams of Bleser Red Mg today, and while pouring acetone on the composition I could actually hear a fizzle when the Mg reacted with the small amount of water. That's probably what's creates air pockets in parlon stars as well.
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