70 replies to this topic

[W.P]

Ive got a copy of the passfire method(s) if anyone wants it?

Yes, please.

[Bonny]

I've started to make some hemis using the method here:http://www.pyroguide.com/index.php?title=Shell_hemisphere
It seems to be working OK, just need more practice cutting in half evenly and straight.
If I am going to use 1/4" timefuse on 3" paper shells, what is the best way to attach it? Should I glue the fuse right into the hemi, or maybe roll a small paper tube, glue that in place and then glue in the fuse?

Anyone???

[BrightStar]

If I am going to use 1/4" timefuse on 3" paper shells, what is the best way to attach it? Should I glue the fuse right into the hemi, or maybe roll a small paper tube, glue that in place and then glue in the fuse?

There's usually no need to use a tube - just drill a hole in the hemi and glue the time fuse in place with good quality wood glue. This seems to hold the fuse perfectly well and the pasting around it as you finish the shell makes the joint strong enough.

Optionally, a bead of hot-melt on the inside of the joint will help seal it and a few turns of glue-soaked string wrapped around the timefuse on the outside of the shell (after pasting) will reinforce it against hard lifts.

Ive got a copy of the passfire method(s) if anyone wants it?

Kyle Kepley takes any unauthorised copying of his valuable site content seriously. I highly recommend joining Passfire to any serious fireworks makers here.

Edited by BrightStar, 27 September 2007 - 01:23 AM.

[SwissTony]

Joined passfire recently.
Must recommend it.
For the amount of useful info that the site contains, I think the membership fee is extremely cheap.

[marble]

Kyle Kepley takes any unauthorised copying of his valuable site content seriously. I highly recommend joining Passfire to any serious fireworks makers here.

good point, don't bother asking me for it now.

[Bonny]

The method looks do-able. Anyway I'm now just waiting for my payment to clear for my passfire membership...can't wait.

[hashashan]

KarlosH : How do you cut the papers into the perfect form? can you post an image?

[The Swedish Scientist]

The big question to me is: Where did KarlosH get those marvelous tools?

[KarlosH]

I don´t understand. Everything is in the previus pictures. I have only one tool, gypsum mould. My homemade method imitate japanese press method, bud I pasting every layer severally. Paper wheels hawe 8 x cut-in. You must work accurate. Dextrin is suitable for this, I tryed warious glues, but dextrine is the best for me. I read, that better are air-ventilation hemispheres, than plastic. This method is a very very time-consumer. Uf. I hawe only two free days, when I can make fire-hobby. (Cry). I working far way from my home.

[The Swedish Scientist]

I don´t understand. Everything is in the previus pictures. I have only one tool, gypsum mould. My homemade method imitate japanese press method, bud I pasting every layer severally. Paper wheels hawe 8 x cut-in. You must work accurate. Dextrin is suitable for this, I tryed warious glues, but dextrine is the best for me. I read, that better are air-ventilation hemispheres, than plastic. This method is a very very time-consumer. Uf. I hawe only two free days, when I can make fire-hobby. (Cry). I working far way from my home.

You made the mold yourself? I salute you!

[KarlosH]

Gypsum mold is easy to make. You must have this: http://img34.picoodl...mmm_5f297dc.jpg You can cut optimal size of aluminum wheel, for optimal hemispheres. http://img33.picoodl...mfm_2364486.jpg

[hashashan]

But do you have a picture of the pre-cut flower shaped paper?
I want to print it and cut those forms

[KarlosH]

Hallo. Interesting japan-newspaper hemispheres.
http://www.yamazakie...i/sikomi-10.jpg
http://uchiage-hanab...le/2_header.jpg
http://uchiage-hanab...le/3_header.jpg
http://img31.picoodl...71m_15a1776.jpg
http://img26.picoodl...mem_5eef58d.gif
http://img28.picoodl...75m_9ba17e1.jpg
bye.

Edited by KarlosH, 08 December 2007 - 10:29 AM.

[hashashan]

Damn how do they do them so round????
KarlosH can you please post the picture of the flower?

[cooperman435]

The flower shape isnt actually that importaint guys.

Its basically just a circle with a radius just over 1/4 of the circumferance of the shell your making (Or a diamiter just over 1/2 the circumferance). It then needs just less than 3.142 tenths removing from its mass in a petal configuration if wanting the edges to overlap or just over 3.142 if wanting them to clear each other and rely on the next layer to actually secure the last one.

Honestly it sounds complicated but its not just use ure imagination as to how it works.........