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Unread 01-02-2014, 11:26
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billbo911 billbo911 is offline
I prefer you give a perfect effort.
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Re: Help Identify This T-Shirt Cannon Robot Please

Quote:
Originally Posted by Cory View Post
I look at this and I see maimed students.

PVC as a pressure vessel is very bad.
Quote:
Originally Posted by Cory View Post
Just because it hasn't failed doesn't mean it isn't horribly unsafe.
+1

This is extremely sound advice!
We stopped using PVC as our pressure chamber on our T-Shirt cannon because of the risk potential. We too have never had a failure, but the risk just didn't make it wise to use PVC.
We switched to ABS. It's cheap, easily available, easy to machine and has a failure mode that is safe. ABS will blister out, and then the blister "herniates". No explosion, no shards, no injury. Additionally, we have also never had a failure with ABS.
So, there really is no reason to use PVC when ABS will do the same job and not have the risk of injury.
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CalGames 2009 Autonomous Champion Award winner
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2011 Sacramento Finalist, 2011 Madtown Engineering Inspiration Award.
2012 Sacramento Semi-Finals, 2012 Sacramento Innovation in Control Award, 2012 SVR Judges Award.
2012 CalGames Autonomous Challenge Award winner ($$$).
2014 2X Rockwell Automation: Innovation in Control Award (CVR and SAC). Curie Division Gracious Professionalism Award.
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