Spring-loaded striker Landmine detonator

AP Landmine – Spring-Loaded Detonator

Warning!

1. This is an amateur 3D-printable model of a landmine detonator. It is my first-ever 3D model.
2. This model is currently in the proof-of-concept/testing phase. There is no way (yet) to attach it to any body containing explosive material.
3. The striker can be easily modified to activate percussion caps.
4. THIS MODEL IS NOT MEANT TO BE A TOY

Known issues (will be fixed in future):

1. When the detonator cover (the part with the ball recess) is pushed down too quickly, the ball doesn’t have time to move out of the striker’s path, causing it to block again.
   → This should be solved by attaching the detonator to a mine body (no model yet). The body will act as a physical stop, positioning the cover in a way that allows the ball to clear properly.

    

2. The top cap thread on the detonator cover may be difficult to screw in for the first time.
   → This is a modeling issue – the thread has no lead-in. You might fix this by adding a small chamfer or starter cut to the cap thread.

Notes:

1. If you have access to an 8mm ball bearing, it will work much better than a 3D-printed ball – the movement will likely be smoother.
2. I printed each part separately, using 0.16mm layer height for a better look and feel.
3. I'm still learning 3D printing, so feel free to adjust settings according to your printer and preferences.
4. I used PETG filament. I don’t know how well PLA will work or hold up.
5. Tree supports (manual) were used for the ball channels in both the cover and the body. Also, make sure to enable “support on build plate only.”

Springs:

1x For the bigger spring which sets the activation weight - 1,6 x 21,6 x 48

1x Inside spring for strike hammer - 1,25 x 11,3 x 63

Please send me feedback!