Show us your pneumatic spud gun!  Discuss pneumatic (compressed gas) powered potato guns and related accessories.  Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
			
		
		
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								farcticox1				                
							
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								 Tue Jun 29, 2021 6:15 pm
			
			
			
			
			Atempting to make a low powered tennis ball launcher, couldn't find a suitable piece of pipe for the barrel so made my own from flat piece of stainless, not perfectly round and has a bit of a seam but I think it will do the job.
			
						 
		 
				
		
		 
	 
	        
			
		
		
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								mark.f				                
							
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								 Tue Jun 29, 2021 6:23 pm
			
			
			
			
			I think it will too. For whatever it's worth, I say mount the barrel with the seam at the top and pray for a backspin. 

			
						 
		 
				
		
		 
	 
	        
			
		
		
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								Moonbogg				                
							
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								 Tue Jun 29, 2021 8:53 pm
			
			
			
			
			Very cool.  I made a tennis ball cannon in high school from a rolled and welded sheet like that.  It worked perfectly and I bet yours will too.
            
			
									
						
			
						 
		 
				
		
		 
	 
	        
			
		
		
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																			 biged
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								 Wed Sep 08, 2021 2:50 pm
			
			
			
			
			Sorry for late response, just a heads up.
2-3/4" exhaust pipe from any auto parts store has a Inside Diameter of 2-5/8ths of a inch. ($30 to $50 for a ten foot piece.)
A tennis ball fits perfectly into them.