Arthur Posted June 19, 2016 Posted June 19, 2016 I'm looking for suggestions for a white star with a bushy white tail, for use as a rising comet. What comps would you suggest please. I'm thinking something in the lines of a slow gold matrix with a lot of 200mesh spherical aluminium (say 30 - 50 %)
Sparx88 Posted June 19, 2016 Posted June 19, 2016 60 - P.Nitrate30 - dark aluminum10 - 80-150 mesh ti or spherical alum 3 - dextrin 2% boric acid bind with 25% alcohol/water (denatured)
MeowMix Posted June 19, 2016 Posted June 19, 2016 60 - P.Nitrate30 - dark aluminum10 - 80-150 mesh ti or spherical alum 3 - dextrin 2% boric acid bind with 25% alcohol/water (denatured)Could you replace dark al with 325 bright flake?
Mumbles Posted June 20, 2016 Posted June 20, 2016 If you want a true white or silver, you'll want to use potassium chlorate or perchlorate. Nitrate based stars are a touch dimmer and often are a little grey in comparison. This is Hardt Silver #3. I quite like it for comets. Potassium Perchlorate - 324FA Blackpowder - 28American Dark flake Al (809) - 6Bright flake Al (808) - 21Aluminum flitters (813) - 5Dextrin - 8 All the greasy aluminum makes this difficult to wet. Using thin wheat paste is the best method. The 4FA makes a nice bushy tail, and helps to preserve perchlorate. It also makes the star more dense, which is helpful for consolidating. As far as Meowmix's question, I wouldn't suggest it. All bright Al would make the stars somewhat difficult to compress due to the low density. Typically a portion of dark flake, or atomized Al is used. 50% of the Al by mass renders most compositions pretty easy to work with.
Aspirina Posted June 20, 2016 Posted June 20, 2016 with this formula by schroedinger I had good results 50 KNO330 flake AL20 S10 Red Gum Test in a shellhttp://www.pyrobin.com/files/wh.mp4
Arthur Posted June 20, 2016 Author Posted June 20, 2016 The Aluminium I have access to is 200 -300 mesh spherical.
PIL Posted June 20, 2016 Posted June 20, 2016 Can grape-nut Ti produce a bushy long tail when mixed in a perchlorate magnalium matrix? The comp is intended for comets.
schroedinger Posted June 21, 2016 Posted June 21, 2016 C6 with added 250-450 ym Ti ( 10%) or yankees flashing stars with 60-100 ym atomized al and 5 parts of the al replaced with flakes al -325 if you want to surpress the flashing. This gives a very nice white tail.
schroedinger Posted June 21, 2016 Posted June 21, 2016 with this formula by schroedinger I had good results 50 KNO330 flake AL20 S10 Red Gum Test in a shellhttp://www.pyrobin.com/files/wh.mp4Nice shell, maybe a little weak burst. Which size al did you use? Those stars should behave a little different normally.
Aspirina Posted June 21, 2016 Posted June 21, 2016 (edited) I would like to know that size is aluminum I use. but in the it can just put it to for resins: "Carga para resinas" ... aluminums I have are this and indian flake.size used for epoxy resins, It is standard or can vary? It is true that has a soft break, only use BP for break it. Edited June 21, 2016 by Aspirina
ExplosiveCoek Posted June 21, 2016 Posted June 21, 2016 I would recommend the Spanish silver streamer. Very nice, long white tail.
schroedinger Posted June 21, 2016 Posted June 21, 2016 Ok thats the reason they behave more like streamers then like a white star they should be. Resin al is typically of 150-240 mesh sizes. Good for glitters. That formula is designated for -325 flake al. For a streamer rather use yankees flashing stars.
Recommended Posts