Kit set BB gun pellet trap (Ressetable)

by dgmossman, published

Kit set BB gun pellet trap (Ressetable) by dgmossman Apr 29, 2010


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This is a pellet trap for BB guns. The triangle point of the target spinner should( in theory) catch in the small slit on the front plate when the small cicular target is hit. The big rectangular target can then be shot to reset the trap back to the original cicular target.

The targets can easily be exchanged for your own designs (they just need a small slit in them).

This is my entry for the Make magazine competition:

EDIT: I have updated the model (STL files only) so that the BB's will not be deflected back towards the shooter, when firing through the bottom target.


The parts should be able to be printed and then assembled with the holes and studs aligning. As this is my first ever 3d printing model, can you please let me know if it is not possible to print parts of the design.

Or if the design does not work, I can easily adjust the angle the triangular point is on, so it requires less force to engage the rectangular reset target.

I made a mistake and thought that the top plane is normal to the Z-direction in solidworks, but unfortuantely it is not! Therefore the STL files are shown in the wrong plane to be printed. Hopefully you can rotate the STL files 90 degrees (about the x axis), yourself before printing (If not, please let me know).

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cool idea, i also agree with Mr_seeker i would at least line or skin the face of the box with some sort of padding or at least metal, most likley i would do something soft to absorb as metal could cause it to bounce back. maybe layered cloth sewn together with a pillow tuck. also i would consider lining the back wall with something to absorb and deflect the shock and impact as most types of plastic dont do well with sudden shock

Thanks for that. Yea it would definately be a good idea to put some cushioning on the front face. I wish I had a Makerbot to test the design with!

I checked your design, and it looks it can be built, but I still have some questions: How you gonna catch the flying bb's? It will go flying back to the person who shot it, because they tend to fly off the back of the box. I would give only one warning: If you want to use this for metal BB's or something that can shoot very hard (like airsoft rifles) I would recommend using metal or PC, because this thing can break easely when shot at high velocities.

Good point about the pellets coming back towards the shooter, I will adjust the design when I get a chance. It should only be an issue with the bottom hole, as any bullets through the top hole will be deflected downwards.