Shunt Posted June 9, 2016 Share Posted June 9, 2016 "Looking at Shimizu's tests, we can see that uncoated magnalium will be attacked dangerously by hydrochloric acid, ammonium perchlorate, potassium chlorate and perchlorate, and nitrates." I thought those tests were done with magnesium, not the alloy magnalium. Link to comment Share on other sites More sharing options...
OldMarine Posted June 9, 2016 Share Posted June 9, 2016 Looking at table 12 on page 126 of my copy of FAST MgAl is only slightly more reactive at room temp in the wet state than Al. I treat my MgAl with Pot. Dich. just to be safe. Link to comment Share on other sites More sharing options...
BlueComet24 Posted June 10, 2016 Author Share Posted June 10, 2016 Yes, Shunt, you're right. I should probably learn to read table captions. Link to comment Share on other sites More sharing options...
Aspirina Posted June 10, 2016 Share Posted June 10, 2016 (edited) By chance, I also wanted to make red stars without Mg/Al... thanks to this post and AzoMittle for sharing formulas, I got what I wanted BigG's Red #1 Red Gum, 5 Parlon, 18 Aluminum (Dark), 12 Strontium Nitrate, 65 Some observations: I sieving the mixture 3 times. I used the method of "cut -stars" wetting with acetone. The mixture is very sandy, hard to get the right consistency. You need to prime it, have difficulty to catching fire. Stars: http://www.pyrobin.com/files/noprim.jpeg Primed stars: http://www.pyrobin.com/files/prim.jpeg Test video: http://www.pyrobin.com/files/red.mp4 Edited June 10, 2016 by Aspirina 2 Link to comment Share on other sites More sharing options...
AzoMittle Posted June 10, 2016 Share Posted June 10, 2016 Cool, I really appreciate you posting some pictures and videos! Having videos allows us to go back and compare this red to other reds. Link to comment Share on other sites More sharing options...
Aspirina Posted June 11, 2016 Share Posted June 11, 2016 Is nothing! With my little knowledge, the least I can do is share with you the progress'm doing. And if I help someone, best impossible Link to comment Share on other sites More sharing options...
BlueComet24 Posted June 13, 2016 Author Share Posted June 13, 2016 I'd like to try making BigG's Red #1, but I'm not doing parlon-bound stars again! I think I'll try using alcohol to activate the red gum. Adding 5% dextrin and boric acid and using water should also be fine, right? Link to comment Share on other sites More sharing options...
lloyd Posted June 13, 2016 Share Posted June 13, 2016 Blue! I wish to encourage you to do Parlon-bound again!They are NOT the nightmare you play them out to be. Do some more research on the handling properties, solvent amounts, and other qualities of such mixtures. I can tell you that they are an IMPORTANT part of commercial operations, and we had "no trouble" with them, after having sorted out the handling issues. I'll also add that they DO require "special handling". Because we were a close-proximity pyro company, we did a LOT of things that required special handling! There are some effects you won't get without Parlon. (no... not here... no time today! <G>) Lloyd Link to comment Share on other sites More sharing options...
BlueComet24 Posted June 13, 2016 Author Share Posted June 13, 2016 Well, I'm out of acetone anyway, and I'm too impatient to wait (I won't be back at my pyro stuff until Wednesday). I'm going to cut these stars, as I don't have a roller. Are you saying parlon-bound cut or rolled stars aren't a nightmare?Is there anything wrong with red gum-bound cut stars? They'll get slick if I over-wet them, but other than that, I can't think of anything. Link to comment Share on other sites More sharing options...
lloyd Posted June 13, 2016 Share Posted June 13, 2016 I'm saying that acetone/"other solvent" solvated Parlon stars are unreplacable in the pyro inventory. (for a hint, usually a blend of solvents is used; not JUST acetone!) You can choose to eschew them, or you can learn to make them. Your choice. I'm just the messenger. LLoyd Link to comment Share on other sites More sharing options...
BlueComet24 Posted June 13, 2016 Author Share Posted June 13, 2016 Ah, I see. I won't shun parlon-bound stars completely, but for now I'd prefer to stick with dextrin, gum arabic, and red gum. Link to comment Share on other sites More sharing options...
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