Half a croissant, on a plate, with a sign in front of it saying '50c'
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everything bomb

c4 plastique explosive 3d printed into common objects
 
(+1, -1)
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c4 can be made into a clay like consistency and printed into cups, enclosures, and other solid objects.

keep a detonator embedded in the device and give it to people or leave it whereever . print whatever shapes are needed.

teslaberry, Feb 09 2015

printing clay with extrusion . https://www.youtube...v=8v-fNXnAaPw#t=174
[teslaberry, Feb 09 2015]

Stallone / Woods / Stone / Rods Tiger http://en.wikipedia...The_Specialist#Plot
[calum, Feb 10 2015]

[link]






       C4 has always been my favorite Battleship opening move.   

       It won't retain its structural integrity for long ; the plasticizer will degrade, and the object will have little or no mechanical strength.   

       You would be better casting or injection-moulding HMX or PETN, but the result is brittle. Extruded PETN rod can probably be fed through a 3D printer.That would be a useful way of custom- manufacturing unique shaped charges, so [+].
8th of 7, Feb 09 2015
  

       How about putting this idea in Business:Advertising:Product Placement?
normzone, Feb 09 2015
  

       Possibly - but after all, at least it's not in ... oh, wait ....
8th of 7, Feb 09 2015
  

       "So who was that who they hauled away in the ambulance? "   

       "Our new printer technician. His coffee mug Exploded."
popbottle, Feb 10 2015
  

       If this becomes popular, there would be a risk of everything exploding in a chain reaction. Like those Minecraft worlds made completely out of TNT. Fine until something blows up.
bungston, Feb 10 2015
  

       Yes, but the crystalline polynitrated aryls are not easy to initiate. They burn well, and fast, even in the absence of oxygen - it's fun to light a block of TNT, then drop it in water - but detonation doesn't just happen.
8th of 7, Feb 10 2015
  

       So there's no deflagaration-to-detonation transition at all, or not with small samples? What if it's enclosed?   

       Anyhoo, you were commenting on a different idea a while back about machinable monocrystalline explosives. Are there useful geometries that 3d printing can achieve, that machining can't? Or is this more about doing it more cheaply?   

       ...Or are you just in favour of making explosives a more ubiquitous commodity?
Custardguts, Feb 11 2015
  

       Even Home:Wall:Change or Home:Pest Control would be more appropriate.
normzone, Feb 11 2015
  

       Maybe you could employ Aardman Studios?   

       Wallace and Bombit.
UnaBubba, Feb 11 2015
  

       That could explain how they got to the moon so quickly. Does C4 taste anything like Wensleydale?
RayfordSteele, Feb 11 2015
  

       No, and consuming even a small amount of C4 will cause serious illness or death.   

       // So there's no deflagaration-to-detonation transition at all, or not with small samples? What if it's enclosed? //   

       Not with small amounts - less than a kilo. Pressure and temperature in an enclosure change the game. However, it's often the abrupt failure of a pressure vessel that will produce a shock wave strong enough to initiate adjacent material.   

       // Anyhoo, you were commenting on a different idea a while back about machinable monocrystalline explosives. Are there useful geometries that 3d printing can achieve, that machining can't? Or is this more about doing it more cheaply? //   

       More flexibly. The geometries tend to be fairly standard; it's the size. 3D printing on demand gets away from the "Small, Medium, Large" limitations of repetetive casting, and the "one-size-fits-all" approach so beloved of Quartermasters everywhere.   

       // ...Or are you just in favour of making explosives a more ubiquitous commodity? //   

       Whatever gave you that idea ?
8th of 7, Feb 14 2015
  

       //consuming even a small amount of C4 will cause serious illness or death// I'm not convinced. What's in it?
MaxwellBuchanan, Feb 14 2015
  

       OK, a quick search shows that nothing in C4 is particularly hazardous.   

       RDX (the fun part of C4) "has low to moderate toxicity with a possible human carcinogen classification". Frankly, that goes for a lot of what I drink on a daily basis.   

       Incidentally, in [teslaberry] I think we may have found a Halfbaker who has learned to write but not to read.
MaxwellBuchanan, Feb 14 2015
  

       If 8th claims to have constructed some monocrystalline rdx, send somebody else over with a video camera: I'm pretty sure fracture speed is in excess of detonation requirements.   

       Experiment: drop some HCl onto a bit of rdx, see if it outgasses or something.
FlyingToaster, Feb 14 2015
  

       " Incidentally, in [teslaberry] I think we may have found a Halfbaker who has learned to write but not to read. — MaxwellBuchanan, Feb 14 2015 "   

       Yeah, funny how that seems to work. Brevity being the better part of wit, discretion is the better part of valor, and unresponsive to comments defines the aptitude. I guess that's one step up from a deletionist.
normzone, Feb 15 2015
  
      
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