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Aerial Shells


Chris

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  • 2 weeks later...
I've never heard of that to use as glue. All manufacturers I know use methylene chloride. So that might be the problem. Edited by FREAKYDUTCHMEN
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I've never heard of that to use as glue. All manufacturers I know use methylene chloride. So that might be the problem.

Neither methylene chloride nor MEK is actually a glue - they are both solvents. The "glue" action is the solvent welding of the PVC, which doesn't achieve much strength until the solvent has completely evaporated. Methylene chloride is more volatile than MEK, so the joint dries quicker; apart from that there's not much between them.

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Problem is I can't find Methylene chloride here, so I'll stick with MEK for the time being, I probably used too little solvent for bonding the parts together. A stronger flash break and more solvent will most likely solve this problem. Heh, I've only made 1 plastic canister and I already feel lazy, no more spiking and pasting for me, atleast until I run out of plastic shells :lol:
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I am with PGF on this one, Methylene chloride evaporates too fast and does not allow for twisting the shell to get a deep seat. I'll stick with MEK as well since all of the ball pieces I find of the equator show a welded seam and the breaks are never on the seam.
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What I'm planning for the NYE... Not really planning, already work in progress.

 

Preparing 26 mortars 3" and 4 mortar 4", 30 mortars total, half work is done - painted and plugged

Making the racks, in progress

Making the ball shells - there will be at least 11-15 ball shells. These are fast made.

Making the cylinder shells - much more labor, because I'll be doing with all possible inserts - serpents, tourbillions, buterflies, hummers, reports, bottom shots and so on

Making the wireless firing system, in progress.

 

Not really wishin to chat anymore, I'm on half a gallon of beer.

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Anyone here try/see the new shells PyroCasings is making? 7/8th of an inch. Im planning on ordering 200 or so to see how they preform as inserts. i know not much is gonna fit, but i'll see what i can make work.
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I've always been leary of plastic inserts. I mean comets can soften the surface, think of the shell break would be much hotter.
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Hei fnrds,

 

I am a Newbie here. Am a pyromaniac. I just need detailed info's n method of making an aerial shell. How to make the burst charge? will it be in powder form or granulated?

how much burst charge do i need for a 2 " n 3" shell? plzz..

need help guys...

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You are absolutely right! We use the Gamon 68mm casings for commercial manufacturing. The casing is very tough and builds up pressure well, as does its bigger brother. The casings however still require a centered flash charge for a nice break. Depending on the effect type, 3" can be built with 2g, 4g or 6g flash charges. 4g is the most typically used amount, where as 2g is for a diadem type effect and 6g for large chrysanthemums. The gamon plastic casings give really nice breaks once filled correctly.

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Thanks for the flash ammounts, useful info. I'm guessing they are meant for 70/30 made with german dark?
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  • 2 weeks later...

Thanks for the flash ammounts, useful info. I'm guessing they are meant for 70/30 made with german dark?

 

Yes, that's right!

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