Lead Break Fuse - Simple time delay for bombs etc

Lead break fuse is completely adjustable time delay mechanism. Simplicity makes it reliable, easy, rugged, cheap, flexible and everything you might wish for. It might be used on bombs, grenades, incendiaries... Your imagination helps. It has been used by soldiers, paramilitary, terrorist organisations. It could be used for military and clandenstine operations, sabotage or simply for fun & education.

Category:

Education

Tags:

• detonator
• bomb
• delay
• timer
• fuse
• primer
• initiator
• guerilla
• warfare
• IRA
• terrorism
• sabotage
• do-it-yourself
• home
• made

[MikeMikeJr83]

i cant believe it. i've been on line and seen all types of crazy shit.

[Slay76]

@MikeMikeJr83 believe it or not. little google magic "lead break fuse" and the first result I found was some rascist whitehonour site. but the info is good though. scroll 'bout 1/5th of the page and there you have it with instructions of assembly

[MrPyrotech96]

the thing that breaks what is it and where can i buy it ?? ;)

[Slay76]

@MrPyrotech96 it's widely available lead solder that's being sold in just about any electronics store and some hardware stores. there's also other places but... just keep your eyes open, it shouldn't be too hard

[sobeita]

I can't help but think that this would be TERRIBLY unnerving if the device didn't go off and you had to approach it again.

[Slay76]

@sobeita That's exactly what it is. But I guess that if one used this fuse on a bomb, he would never consider approaching it again. For instance IRA used this fuse on their terrorist attacks, there shouldn't be any possibility for the need to disarm or call of the detonation. If there might be one, another fuse should be used

[cartmanshellonearth]

just so crazy the ira wood do it lol

[Kasper0ner]

something like this was used in world war 2, i think it was called "pencil L delay fuse"

[Slay76]

@Slay76

with a 6 millimeter hole in the middle to serve as a washer against what the solder holds the striker.

Normal coil spring

Spring stocks thickness 1mm, 7 coils per inch

diameter 7/9mm (inside/outside)

lead solder about 0,75milimiters in diameter

Ofcourse you need to adapt the striker to whatever you want to use it for. All the dimension can and should be adapted to any dimension you want, affected by the materials you have on hand.

I'll post a video with more pictures on this evening

[Slay76]

@captainzim This is simply the mechanism for the time delay. I fabricated it like so

striker:

6mm roundbar about 70mm long

8mm roundbar 10 millimeters long

I tapped the 8mm roundbar for the 6mm to form a shoulder to the 6mm bar. You could do this easier if you like to. I drilled a 4mm hole for the lead solder to go to, placed about 30 millimeters from the point of the striker. Another one to the other end for the key ring(optional)

Piece of 20mm bar, 4 millimeters long...

**to be continued**