Casings

[Jago]

Originally Posted by Kataklysm

I use the launch tubes from Saturn missile batteries.

Yes that's a common item we find lying around the household.
What the?

PVC pipe or cardboard are probably the best casings you can use. At the moment I have PVC pipe coming out of my ass (well, very very readily available, for free).

[Kataklysm]

I was just saying if you ever go to a fireworks store somewhere you pick one up and strip it down you have 100 ~ 200 casings or bigger all depending on what size you get obviously. I like using them for simple black powder/flashpowder explosives.

*EDIT* Rofl at you post count (immature I know.)

[ZX980]

ok, i have a question, what is the point of a blasting cap, couldnt you just spare the resourses and use a longer fuse?

[Kataklysm]

Originally Posted by ZX980

ok, i have a question, what is the point of a blasting cap, couldnt you just spare the resourses and use a longer fuse?

The blasting cap gives a greater heat than fuse so some mixtures can only ignite with something hotter than a fuse.

[Shalshaska]

Originally Posted by Kataklysm

The blasting cap gives a greater heat than fuse so some mixtures can only ignite with something hotter than a fuse.

It's not about heat so much as about speed and pressure. Some compounds called primary explosives) are more sensitive than others, and can achieve DDT (Deflagration to Detonation Transfer) in rather small amounts. These compounds are ideal for blasting caps. Other explosives (called secondary explosives) are less sensitive, and require a shockwave (provided by the blasting cap) rather than a simple flame.

[The_enemy_hacker]

What i have always done in the past is roll alluminum foil a couple times around a pencil or expo. determines on the size wanted. Then for the ends soak tissue paper with elmers glue and like absorb it and ball it up on the ends. works great and doesnt stop fuses or pop off or mess up.

[Jago]

Decent idea, but I'd say not the greatest if dealing with peroxides(peroxides + metal = bad).

[Widigo]

From what I can tell materials are either going to be unfriendly to plastics or dangerous around metal. What can be used that will hold soundly, and not cause premature explosion.

[Shalshaska]

PVC is best for chemical stability, but some people like to say it's bad since it won't come up on metal detectors. I only support this fact if you're standing within 20 feet of it upon detonation, because PVC has less mass, and less inertia, whereas a chunk of metal will retain high speeds for a longer time.

[Widigo]

Why would you want an explosive device to be detectable?

I understand that this forum is about casings, not just for blasting caps but for explosives of all natures. So, posting my question here seems safe. (Yes another question)

Would using a glass test tube to hold black powder, and then using a stopper that had a hole in it made for connecting rubber hose to the tube work. I think that if fulled and you ran a fuse through the stopper's hole it would work quite well. What do you guys think?

[Shalshaska]

You want it to be easily detectable if it is embedded several inches into your flesh

[Vallen]

Originally Posted by Shalshaska

You want it to be easily detectable if it is embedded several inches into your flesh

LOl no, I want tiny pieces of metal embedded in my skin.

They make nice piercings.

[Jago]

General rule of thumb. Don't hang around during a detonation if you want all your limbs/want to stay alive
PVC is good because it won't react with the organic peroxides. And also has the other advantages previously mentioned by Shalshaska.
Your test tube idea will work, just don't hang around when it goes off (glass shards can be a bitch to get out ).

[Widigo]

How far do you think it would propell the glass?

[Jago]

far enough for me not to want to risk it

[Widigo]

In you're professional opinion would said glass fly hard or fast enough to harm a person that was wering thick clothing from say 10 ft? I know this sounds like a strange question, but humor me.

[Shalshaska]

There are just too many variables to ever be absolutely sure. You can make your odds better, that's it.

[Widigo]

Is there a size requirement on Pipe for explosives? If you wanted a small contained explosive could you use 3/4" PVC?

[Jago]

why would there be a size requirement? :S

[Widigo]

For effectiveness, or safety, not a requirement, but a suggested size.

[Jago]

varies depending on application and desired effect. Allot of variables come into play.

[bob]

Ok I have been interested in explosives for a long time (The knowledge part not the doing part) and I have read this topic and gone... WTH is rolling? I undertsand the movement of rolling but could anybody explain this a little better for somebodyt with no idea?

[cooki]

Can anyone help , ive been looking everywhere for some metel pipe with threaded ends so then i can screw caps on the end /pipe bomb/ or even caps i can use on copper pipe any help would be great

[jrly]

Originally Posted by cooki

Can anyone help , ive been looking everywhere for some metel pipe with threaded ends so then i can screw caps on the end /pipe bomb/ or even caps i can use on copper pipe any help would be great

Just go to a hardware a hardware store and buy a pipe with threaded ends.

[grndpndr]

Ive read this thread 2x now and WTF
A few answers; black powder does not have the brisance to detonate a HE except perhaps peroxides/low order nitroglycerin detonation
A burst toilet roll = an inadequate detonator/ shit HE.
Metallic pipe/tubing does react w/some primarys/secondarys.A coating of wax/polyurethane wll solve this.
Plastic straw blasting caps.Love to see the device that loads a straw with a primary explosive to a few thousand PSI which is needed to make a commercial quality equvalent detonator.A straw with loose AP may work with peroxides as a secondary but not commercil quality or military HE.
Lots of great misinformation ,obviously you need a moderator over 12 with a bare minimum of explosives and chemical knowledge

[Corporal Punishment]

goddammit shut up !

brisance is a property associated with HE and ONLY HE as it is the shattering power of a HYPERSONIC pressure wave.

NG doest need a blasting cap to detonate... SHOCK SENSITIVE USE A SPRING!

describe for me IF YOU CAN what "commercial quality" HE is?

yes indeed great misinformation mr know it all :roll eyes:

[grndpndr]

Achtung! General Grims self appointed underling is issuing a command to shut up revealing his vast knowledge of the english language as well as his debating skills and temperament when
his fiefdom is challenged

The rest of you would do well to search the net and READ! The questions and answers
Ive seen are just awful for the most part.Whether your interested in pyrotechnics or explosives again for the most part its the blind leading the blind.Your asking questons of people of whom you know nothing about and betting you life and limbs on the answers.
Download some simple synthesis to start.I cant/won lead you by the hand you wont learn anything that way.From the simple yet dangerous to handle peroxdes, to simple nitrations
again using OTC precursors with det velocitys greater than TNT and simple fulminate of mercury as detonators you won't learn it here I dare say.

[Corporal Punishment]

I told you to shut up because you don't know what the fuck you are talking about and really do tend to ramble.

The rest of you would do well to search the net and READ! The questions and answers
Ive seen are just awful for the most part.Whether your interested in pyrotechnics or explosives again for the most part its the blind leading the blind.Your asking questons of people of whom you know nothing about and betting you life and limbs on the answers.
Download some simple synthesis to start.I cant/won lead you by the hand you wont learn anything that way.

follow your own damn advice jackass

[grndpndr]

IF you intellect is =to your English skills your IQ is likely lukewarm as thats a good portion of many IQ tests ,Corporal privates Punisher.LOL PS; You gonna patent the nitro det notion with a spring?

Once again I see my posts are deleted while your insulting pointless replys remain?BJs by Internet brownnose?

[General Grim]

Continue arguing and I'll negative rep both of you and report your posts.