Instructables.com - Build A Net Gun

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clutch00 says: Oct 3, 2010. 9:39 PM REPLY ok i understand everything exept the blow gun and the sprinkler valve seems it would be easyer to use a straight brass ball valve???? but im going to buy the stuff in the mourning Screamo says: Sep 26, 2010. 7:11 PM REPLY Dude thats awesome go catch some bears :D j4lmmfwcl says: Aug 21, 2010. 7:14 PM REPLY im almoast done with my net gun but i cant figure out the size of the net. crispyjones says: Aug 24, 2010. 12:22 AM REPLY You're not giving me much info. Did you buy a different net size other than #263? Ukrobotman says: Aug 18, 2010. 12:30 PM REPLY Hi I am based in the Uk and am planning to build one of your guns here using parts available in our local stores which differ from yours. I will keep you guys posted as to how I get on. I was at Maker Faire in San fransisco in May and a cool Steampunk guy had built his own net launcher. I know cos he shot it at me! I didn't get to investigate how he had made his, it was more compact than your design. Do you or does anyone else know any more about the guy and his machine.? Regards Steve in London crispyjones says: Aug 18, 2010. 7:50 PM REPLY I was at Maker Faire too, great time. I saw the net gun you are talking about, the group was the League of Steam I believe. There are a few videos on youtube, and some picture on flickr. It looks like it is sprinkler valve based, he kept the electric solenoid. I really don't know what he used to launch the tractors. Good luck on your UK build, I am interested to hear how it turns out. ToolTech says: Jul 26, 2010. 9:53 PM REPLY I know this has more than likely previously been questioned, but is the thinwall PVC necessary? I have plenty of 3/8" laying around but as with others I have had troubles finding thinwall. Will performance severely lack if I use the regular PVC? crispyjones says: Jul 26, 2010. 10:56 PM REPLY I am assuming you meant 3/4" PVC not 3/8". Regular 3/4" PVC will not actually fit over 1/2" PVC, that was why I recommend using the thinwall. Additionally, the 3/4" couplers are very close in size to the bottle necks. The next closest sch40 PVC that would fit would be 1". I think it might be a tight squeeze fitting the bottle neck into one end of 1". If you do get 1" tractors working, let us know in the comments. Danno420 says: Aug 15, 2010. 11:46 AM REPLY I used 1" sch 40 tractors with 1" caps on the ends. The bottle necks of certain bottles fit perfectly. I added rubber cement to help keep em in. I used black plastic, 1/4" hole bird netting I bought at Home Depot (comes in 14' x 14'). The tractor launcher arms are set at 10 deg and the net at the moment is 7 x 7 foot. I used a little electrical tape to hold the net to the tractors. It fires great. We have fired it 50 times or more and the net is still not ripped or coming off of tractors. I am still going to buy the recommended net though at some point. Took about 3 hours to get all my parts together at home depot, but me and my buddy assembled nearly the whole gun in the isle just to be sure we weren't going to need to make a second trip. The funny thing is we used all 2 foot pieces for everything including all couplings and the gun was about 14 feet long on the ground in the isle of Home Depot. LOL ....Then we knew we had everything correct (except for tooo many 2 foot pieces we don't need) but then we put back all the extras. The only thing we deviated from on this project to keep the cost down a hair, was the trigger. Instead we just bought a 1" ball valve and mounted it with the T-handle on the left side of barrel in the exact spot the sprinkler valve would have gone. It works great. If we wanted to add the sprinkler valve later we can just unscrew the ball valve and screw in the sprinkler valve, but I don;t see the need. Also we made the pressure chamber with 2" pipe and about 16" long. We are going to be replacing the front net holding tube with 4" pipe. We currently have the center net tube capped off so we are not using any air to push it out and it still works great with extra power for the tractors. We have come to find the 4" tube will hold more net and looser. I have left a easily removal 1/2" cap on the center tube though so if I choose to use it I just pry off the cap. I can cap the tractors and uncap the center tube, load it with backing and some fish gravel and now I have a shotgun too. Thanks for all the instructions. Everything went without a hitch. crispyjones says: Aug 16, 2010. 3:47 PM REPLY That's great that you got bird netting to work. I can definitely see using a larger net holder, I remember that stuff being pretty stiff. I would love to see a photo or video of it in action. I am also interested in what kind of range you get out of a 10 degree launcher angle. Thanks for posting! ToolTech says: Jul 27, 2010. 11:30 AM REPLY (My bad spelling error) Thanks alot, I'll mess around with it a bit. Im using a air chamber from a previous potato gun with a one inch ball valve. It is two large fire extinguishers linked with galvanized steel elbows. I need to adapt your net design to one inch at the open one inch ball valve. My design has a pressure gauge built in as well. However I still need a net before I can test the setup. Kantor says: Aug 13, 2010. 7:14 PM REPLY would heavy duty liquid nails be a good epoxy?? http://www.instructables.com/id/Build-A-Net-Gun/
crispyjones says: Aug 13, 2010. 9:02 PM REPLY I doubt it. I know they sell some different versions of the product, but the ones I've seen don't look suitable. Kantor says: Aug 13, 2010. 9:53 PM REPLY so what would work? crispyjones says: Aug 14, 2010. 3:30 PM REPLY Use the two part epoxy that comes in the double syringe type applicator. It is sold by many manufacturers, I have used different brands with similar results. I think I used Loctite brand last time, but I am not 100% sure. Kantor says: Aug 14, 2010. 11:39 PM REPLY i just so happen to have about half a syringe of that stuff laying around,thanks for the help jpa234 says: Jul 18, 2010. 11:31 PM REPLY do you think you could shrink it down somewhat and make parts of it fold/unfold then mount it on your arm. view all 577 comments http://www.instructables.com/id/Build-A-Net-Gun/
Page 1 and 2: http://www.instructables.com/id/Bui
Page 3 and 4: Launcher section Fig 3 4 13" length
Page 5 and 6: Now enter all the information from
Page 7 and 8: Image Notes 1. 1" orbit 57461 sprin
Page 9 and 10: Optional: perform a leak test. Pres
Page 11 and 12: File Downloads 17 degree.pdf ((612x
Page 13 and 14: Image Notes 1. Incorrectly aligned
Page 15 and 16: 1. 8" length of SDR-21 3/4" pipe. 2
Page 17 and 18: Image Notes 1. 12" length of 1" ID
Page 19 and 20: Step 11: Et cetera Thanks for all t
Page 21 and 22: Image Notes 1. Slobbery ball chaser
Page 23: mikeysmachines says: Dec 4, 2010. 8

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