ABS plastic Cannon.

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Postby TurboSuper » Wed Jan 10, 2007 10:47 pm

Your problem is that you're using either too little or too much fuel.
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Postby harmon12407 » Wed Jan 10, 2007 10:54 pm

My first guess is that you are using too much fuel. Less is more. Just a few squirts will do it. Also, you need to vent your chamber after each shot or the exhaust fumes will choke any subsequent ignition.
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Postby Zorrowannabe9 » Thu Jan 11, 2007 12:28 am

on the note of your gluing...primer is not needed for ABS...I have built 4 canons out of ABS and not once use primer, mainly because there is no ABS primer that I know of.
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Postby FLONE » Thu Jan 11, 2007 9:42 am

I stand corrected. Thanks for setting me straight on the ABS gluing.
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Postby SpudMonster » Thu Jan 11, 2007 2:10 pm

I personally used PVC/ABS cleaner (like <a href="http://www.oatey.com/apps/catalog/showskus.asp?ctg=1&subctg=1&prodgrpid=173">THIS</a>) for a "primer" on my ABS gun. It's held up to multiple accidental closed-chamber firings.
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Postby TurboSuper » Thu Jan 11, 2007 4:00 pm

Yeah, that's cleaner. It makes the bond slighty better, but it isnt entirely necessary. I usually just wipe the surface down with rubbing alcohol, sure theres some residue left after it dries, but I don't think its enough to cause any problems.
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Postby Unusual_Rex » Thu Jan 11, 2007 4:17 pm

Okay. Thank you very much!

Edit: I'm still having trouble! My potato cannon will still not fire! I didn't even put a seconds worth of spray in there! Still no explosion! Any ideas? My AXE contains Alcohol Denat., Isobutane, propane, Parfum, Isopropyl Myrisstate.
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Postby markfh11q » Thu Jan 11, 2007 8:45 pm

Yes, ABS does not require primer for a proper bond. There's a great page on ABS properties and usage somewhere, (it's a PDF), but I can't find it again. Just hand on a second and I might be able to find it.
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Postby Zorrowannabe9 » Thu Jan 11, 2007 10:35 pm

<blockquote id="quote"><font size="1" face="tahoma,verdana,arial" id="quote">quote:<hr height="1" noshade id="quote">Originally posted by markfh11q
[br]Just hand on a second and I might be able to find it.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

Il "hand on" for more then 1 second if <i><b>you</i></b> want me to ;)
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Postby Unusual_Rex » Thu Jan 11, 2007 10:51 pm

Do you think a flint lantern lighter would work better that a BBQ ignitor?
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