trueblue256 Posted January 28, 2014 Posted January 28, 2014 Hi all I am usually not trying to reinvent the wheel but…. I am looking to bounce the idea around of pasting/spiking ball shells with S2 fiberglass cloth and epoxy I work in the composite industry and seems like a layup of weaved S2 glass epoxied to the shell would be a great deal stronger for confining the burst than straping tape and or paper pasting, as weel as being faster or close to the same as pasting time. Any objections? Anybody tried this?
Bobosan Posted January 28, 2014 Posted January 28, 2014 (edited) It's great to experiment and you may have great success with fiberglass pasting. However, the downside is that it's not very ecologically sound since the glass fiber would not degrade easily. Same is true for fiber impregnated strapping tape that is used on plastic shells. Here on APC I have learned that paper based shell casings, pasting and hemp/sisal/cotton spiking is way less damaging to the environment and if done properly, can give you just as confined a break as any synthesized materials. Edited January 28, 2014 by Bobosan
pyrokid Posted January 28, 2014 Posted January 28, 2014 Paper and paste is cheap, epoxy and glass is not. Strength is not the only factor to consider when determining shell confinement. You want symmetrical breaks too.
nater Posted January 29, 2014 Posted January 29, 2014 Normally we try to avoid flying pieces of fiberglass and other sharp shrapnel while shooting fireworks. I don't want your fiberglass wrapped shells on the firing line when I am there.
trueblue256 Posted January 29, 2014 Author Posted January 29, 2014 Thanks for the in put. I thought about the shrapnel if a 4 inch shell is fired and flower pots at 200 meters the maximum velocity of the glass pasting would only be around 17 mph and that's if it comepacks to a two inch ball and stays a single piece the more fragments the less enerta it will have carry a .110 thick pasting would only weigh around .16 ounces on a 4 inch ball so not much mass to carry the velocity compared to air resistance. The reason I'm contemplating this is for the fact that it in theory it should act as one single strong shell for a very uniform break.The lawn mowers bagger will be taking care of the environmental impact.lol
Blackthumb Posted January 29, 2014 Posted January 29, 2014 Anyone tried dipping a lightly pasted shell in waterglass....?
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