SixPax Nerf trip mine

by IanGrayden, published

SixPax Nerf trip mine by IanGrayden Dec 30, 2013
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11079Views 1586Downloads Found in Sport & Outdoors


After being inspired by AnthongRedbeard's http://www.thingiverse.com/thing:14991 I went about designing my own Nerf mine.
The mine consists of two components, the top part holds 6 Nerf projectiles in a revolver cylinder arrangement with a central guiding hole. The base consist of a central guide that has a hole positioned for a retaining pin. Surrounding the guide are six ejection rods. Elastic bands are used to store the energy required to propel the projectiles just over 3 metres. My cylinder stopped printing about 75% through the print run but worked anyway so I haven't bothered reprinting it.

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Just published a remixed "extra high velocity, use at your own risk, adult supervision required" version for even more "daaaaaaaaaaddd!!!!!"-factor. Take a look and let me know what you all think.

Printed this a few days ago. I think it is hilarious, but my kids kind've hate you =) Great idea!

I'm actually mid stroke designing a nerf mine for my son and i wanted to say i like your solution for propelling the darts.


id like to see vid set up too

Cylinder Update! I have made a few updates to the Cylinder magazine. Download the MKIII Cylinder for improved functionality I have added a slot on one side that allows a strap/string/wire etc to be use to attach the mine to an appropriate object. Two ears have been added to the lower edge of the opposite side these have a hole in each which allows a safety pin to be added to reduce the possibility of unintentional discharge when setting the mine. Most importantly the height of the Cylinder has been reduced to ensure that the ejection rods completely clear the cylinder. this makes a slight improvement in the range of Nerf projectiles. (Picture and new STL added)
Thank you!

Trigger Update! Looking into the trigger issue I stumbled on a solution used by William Mills. Basically I used a small strip cut from a tin can and bent up each in so that it clips over the side of the cylinder. On one of the ejection rods I used a hacksaw blade to cut a small notch into one of the ejection rods . To arm the mine the cylinder is moved to the set position and the clip is positioned over the side of the cylinder with the end of the strip fitted into the notch. The cylinder is drawn back onto the strip with the pressure from the bands holding it in place. I tied some fishing through a hole in the spring on the top end. Only slight tension on the line caused the clip to pull off the top of the cylinder triggering the mine. (Pictures added)

Check out copy I printed. Makerware did something weird with the geometry...

Sorry to hear it didn't work out. I created mine on a Up! 3D printer.
Does the blockage completely fill the holes in the cylinder or is it just at the top. The diameter of the holes are as follows center hole 10mm and the others are 13.6mm. It may be possible to save the part by running a drill of the appropriate size through the holes.
I created the 3d model using Pro Desktop so I can export the file in medusa, IGES, STEP, VDA or SAT if it will help.

It was kind of weird, only the portion of the cylinders above the rubber-band hook were printed filled in. (http://www.flickr.com/photos/zorlack/11668390056/)http://www.flickr.com/photos/z...

I actually just chopped off the top of the version that I printed and now it works great. I wonder if there's some intersecting geometry that Makerware doesn't like.

Just added a simplified version of the cylinder with out the cutaways on the side of the cylinder.
Thanks for you comments.
Just gone 12:00 Here in Perth Western Australia! Happy New Year!!!