oh my god

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
crsaz
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Wed Apr 04, 2007 9:56 pm

its just covering up the screws for ignition points
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PCGUY
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Wed Apr 04, 2007 9:58 pm

Ah, well that is real weird, I guess it turns out that ABS doesn't really tear!

It must have been somehow weakened/damaged however, since plenty of people use ABS just fine all of the time.
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BC Pneumatics
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Wed Apr 04, 2007 10:06 pm

<s>The electrodes, I assume.</s>

Sorry, didn't realize there was another page.
pyromanic13
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Wed Apr 04, 2007 10:18 pm

shens revoked
Movie dialogue: "The good die first."
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patterns."
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frankrede
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Thu Apr 05, 2007 12:02 am

sjog wrote:If you jam a plug in almost any combustion gun it will blow up.
Key word: Combustion -- Not as in fire ,as in bang!
That is not true.
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clide
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Thu Apr 05, 2007 12:20 am

I've seen pics of ABS shatter into pieces before, but that was a propane and oxygen injected shot, never would have expected it with just propane. Was it cold outside when you were shooting?

The extent of the failure is still far less than what a similar failure in PVC would have done. Notice that the cracks were able to stop themselves from propagating and let the gun remain mostly intact. You would never see that on PVC.

I would never use a cell core gun, but if I was held at gunpoint to fire either a cell core PVC gun or a cell core ABS, I would fire the ABS.

Thanks for the pics and glad you are OK
SpudBlaster15
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Thu Apr 05, 2007 12:22 am

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joannaardway
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Thu Apr 05, 2007 12:25 pm

Yup - in that case, my BS-meter seems to be fine.

Given this incident, perhaps we need to reconsider construction materials. Inevitably, this will come up in the next ABS vs PVC debate.
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Matheusilla
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Thu Apr 05, 2007 1:14 pm

Is/was the pipe old? aged? left in the sun? exposed to ozone? and, yes, was it cold out? have you ever used anything other than propane in it, like a solvent based fuel?
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crazyfreak0075
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Thu Apr 05, 2007 1:58 pm

Man that gun is looking weird what was the design for it, is there a barrel attatchment. Lol. looks more like a pipe bomb to me.
crsaz
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Thu Apr 05, 2007 5:10 pm

the barrel screws on thats a 2 inch male threaded adapter on the end.

no it wasn't cold out it was like 80 degrees out
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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.
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crsaz
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Thu Apr 05, 2007 8:04 pm

no it was through a doyble layer
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Bubba05
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Thu Apr 05, 2007 9:40 pm

Dude!!! wheres my hand? wow well its good to here ur ok!!
Just by looking at it there may have been stress fractures in the plastic the way it cracked then split? dono!
Ur ok thats the main thing. Dont give up on it yet mate ive had 3 shapnel on me and im still building!!

Bubba
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Thu Apr 05, 2007 10:08 pm

Glad to hear you're ok.What do your parnts think about the whole spud gun thing now?
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