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Japanese Hemis


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#1 Arthur Brown

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Posted 14 May 2010 - 06:53 PM

I've seen methods of shell making using ball shell formers in three parts, a hemi, a ring and a top lid. Does anyone know a supply of these please.

Edited by Arthur Brown, 14 May 2010 - 06:54 PM.

http://www.movember.com/uk/home/

Keep mannequins and watermelons away from fireworks..they always get hurt..

#2 martyn

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Posted 14 May 2010 - 07:14 PM

Hello Arthur - I've only seen plastic ones, is this type of thing you mean?

ball mill!!!!

This chap seems to be selling largish ones as ball mills.

#3 Mumbles

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Posted 14 May 2010 - 07:28 PM

Those originally come from Plasticos Gamon out of Spain.

Anyway, I think the Japanese just cut the paper shells in order to get the three pieces.

#4 Arthur Brown

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Posted 14 May 2010 - 07:31 PM

Thanks people. I really don't want all that plastic to clear up so I think that the knife idea may work well.
http://www.movember.com/uk/home/

Keep mannequins and watermelons away from fireworks..they always get hurt..

#5 dr thrust

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Posted 14 May 2010 - 07:39 PM

have you got any pictures?, or can you direct us to where you've seen the formers?

#6 seymour

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Posted 14 May 2010 - 08:14 PM

It's described, with illustrations, by Shimizu in both F.A.S.T and Lancaster's book.
The monkey leaped off it's sunny perch and flew off into the night sky.

#7 al93535

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Posted 16 May 2010 - 03:46 PM

Japanese hemi's are almost always paper, at least the ones I have seen. The hemishperes are simply perfect! They do not warp into football shapes, they are a bit thicker with stronger paper, and they meet together with zero gap. They are a luxury to use! On 8" plus shells they come with a plastic ring to keep the two hemis together and keep them nice!

What you are talking about are the plastic shells from gamon plasticos like mumbles said. A bottom hemi, then a top hemi that has a removeable top section to aid in filling the shell all the way up then putting the cap on. This eliminates the step of slapping the two hemi's together. A very nice construction method. These shells also come with a molded snap on plastic lift cup. There are also nesting sets of shells out there, and those are very very nice!

Anyways other then making a purchase from the manufacturer your best bet is here: http://www.pyro-pro.com/ email him if you dont see what you want.

What size are you looking for? and how many?

Edited by al93535, 16 May 2010 - 03:47 PM.

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#8 pyrotechnist

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Posted 17 May 2010 - 01:22 PM

Bloody hell thats an expensive site, 120 or so dollars for one shell, you kidding me! would be neat if it was English and cheaper.
fireworks is my aim setting of is the game

#9 PyroSkitz

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Posted 12 July 2010 - 11:39 PM

Bloody hell thats an expensive site, 120 or so dollars for one shell, you kidding me! would be neat if it was English and cheaper.


Yes, $129 dollars and $250 dollars, but they are 16 and 24 inch shell casings lol ;) no just standard commercial shells that every Tom Richard or Barry wants to buy lol :D although I bet making a 24" shell would be one he'll of a fun project to do and also to launch :D

#10 pyrotechnist

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Posted 14 July 2010 - 09:04 PM

Get a football and past it yourself lol :), just seems a bit expensive for me.
fireworks is my aim setting of is the game

#11 digger

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Posted 14 July 2010 - 09:25 PM

I bet making a 24" shell would be one he'll of a fun project to do and also to launch :D


I would guess that in the UK you would find great difficulty finding anywhere with a big enough safety distance to fire one(600m or a 1.2km diameter circle with absolutely bugger all in it).

Must weigh a bit too, I would guess about 70kg to 80kg given that a 16" weighs 20kg to 25kg. So I guess the cost of the casing will be small in comparison to what you use to fill it!

Edited by digger, 14 July 2010 - 09:26 PM.

Phew that was close.

#12 PyroSkitz

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Posted 15 July 2010 - 12:18 AM

What do you mean by getting a football and pasting it haha ? :), also yeh 1.2km does seem a lot, is this the recommended to also be away from the shell to see it properly lol ? :), and yeh a 16" shell can quite easily take up a few hundred pounds worth of stars and effects if it wanted to lol... I wouldn't want to know the cost for a 24" ;)

#13 Mumbles

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Posted 15 July 2010 - 02:27 AM

I've seen a few 24" shells. They generally weighed in around 220-240lbs.

#14 digger

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Posted 15 July 2010 - 06:27 AM

also yeh 1.2km does seem a lot


1m radius for 1mm of shell diameter is the accepted norm for safety. Think about the burst diameter and the distance it can fly!
Phew that was close.

#15 pyrotechnist

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Posted 15 July 2010 - 11:44 AM

I meant to create a shell casing, past the ball and once dry cut it, just a thought lol.
fireworks is my aim setting of is the game




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