Least amount of falling debris

[Todd]

For those who have made both ball and cylinders shells which has the least amount of falling casing debris?

 

Ball shells constructed using paper hemis and gum tape

 

Cylinder shells using kraft paper and spiking

 

Any insight?

 

Reason i ask is I do not like the falling debris from my ball shells, wondering if cylinder would have less. Currently making 1.75, 3 and 5 inch ball shells, would so similar sizes as cylinders

[Richtee]

Well for the same given volume I think it’s the sphere that has minimum surface area. IE debris. Unless ya count blind stars

[Todd]

No solely looking at casing material, all comp is ignited.

[justvisiting]

I think a more important question is what is the debris consisting of? Paper and string decompose over time, plastic and strapping tape, not so much.

[Arthur]

Mines, fountains, comets and traditionally fused roman candles have the smallest debris footprint. However some debris will happen no matter what.

[Todd]

The debris is about quarter sized chunks of the casing, so the paper hemi and 4 layers of 75% overlap .5 wide gum tape. So the chunks have some thickness to them, which is why I was curious if cylinder shells produce less as they have less layers of kraft and no paper hemi which is 1/8 or so thick

 

Todd

[Carbon796]

You'll probably end up with bigger chunks of debris from cylinders. Especially in the 5" size. If made in the traditional American-Italian style. Its not uncommon for the spolette, inner and outer disks, inner pleats, spiking, and outer paste wrap. To come down as still " assembled ". The spolette, pasted spiking, and outer paste wrap, tend to hold that assembly together.

 

On smaller insert type sizes. This can be reduced some. If you close them with the tongue fold method. And only use a single inner or outer disk. You'll often see side fused Maltese styled inserts. With a single outer disk before spiking. Where Italian styled ones use an inner.

Edited July 11, 2022 by Carbon796

[Richtee]

No solely looking at casing material, all comp is ignited.

Woah.. yer pretty confident

[Arthur]

At every pro show I've worked on there has been something that left blind stars on the ground afterwards.

[Richtee]

At every pro show I've worked on there has been something that left blind stars on the ground afterwards.

Had one land in my beer once. After a couple sips, I had a wonderful horsetail recipe.

[Carbon796]

At every pro show I've worked on there has been something that left blind stars on the ground afterwards.

Thats pretty common with commercially manufactured items. Especially Chinese items. And, is also more common with ballshells than cylinders. Hopefully most hobbyist take enough pride in their work. To build better quality items than that.

Edited July 12, 2022 by Carbon796