Rubber band gun - no screws required

by nigeljohnson73, published

Rubber band gun - no screws required by nigeljohnson73 Dec 21, 2014
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Glue is also optional, but your milage may vary with the tolerances of your printer.

I loved the simplicity of the original rubber band gun by @gavilan, but the need for screws, bolts washers, and no idea what size elastic band to use was a bit of a downer. So I built this with the innards.

I also made the barrel shorter to work with size 10 rubber bands, well a standard is as good as a rest. The trigger elastic band is a size 16.

Bring on the zombie apocalypse!!

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Aug 8, 2015 - Modified Aug 9, 2015

This is a really awesome project!!! I have to drill my holes a bit too. That might be my machine- a Printrbot Simple Metal running Cura. Do you know any problems? Thanks in advance!

Just sanded my pegs and that seemed to work.

My first part Video of this gun: https://www.youtube.com/watch?v=5TZrTixWUqc
I had to open the holes little bit too. But i think its my machine also, not the design.

Printed one in ABS, my 5yo son and i are having s blast with it, thanks! Only thing i had to do was open the holes a little with a drill bit, but my machine always seems to make holes a little undersize, so thats on my end, not the model. Thanks!

sorry but the model suck. i sand the pegs for an hour and the end resolt was broken part. sorr not a really good model. didn't work whit me

Dude... Take a drill, drill the holes a little bigger for the pegs to fit loose and hot glue the pegs that are supposed to be tight!!!

no it will didn't fit. one of the tow big piece was smaller than the other. so it will never fit



Hi Nigel,

This looks great. I've printed out all of the parts except the Frame_Top keeps failing,
I had another look and it seems to be 180 degrees flipped, with the round parts printing first. This would require support material.
Where as if you flipped it over it would not.

Am I missing something? Any help would be appreciated :)

Nope, you're not missing anything, it does indeed appear to be flipped. No idea why that happened as it's not like that in the full plate of everything. I'll see if I can find the original files and upload that part again the right way up.

That'd be awesome, thanks muchly

Dude! Its awesome! I printed 1 and it works awesome! I had to drill out the holes on 1 side to get it to fit though.

Okay - now go try the barrel coupler - if you dare !

Just made this.
Presumably you used abs - as with pla the pegs are the same size as the holes.
But used the sprocket to wear the down and the gun works really well :-)

I'm going to make a longer barrel to get a little more oomph. But that aside - great bit of kit !

Cool, glad you like.

I only really print in PLA. In the model the pins have a 0.2mm clearance for the tight frame fittings and 0.3mm clearance for the looser ones on the trigger and band loader. If I print cooler (195-200C @ 25mm/s) these tolerances work well for me with minimal stringing.


single part files would be nice

Sorry, thought most apps have the ability to split parts. Added components :) Cheers.

Thank you very much :-)