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PA Bolter NX 3D Printer File Image 1
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PA Bolter NX

Tommy 3D Lab avatarTommy 3D Lab

April 11, 2026

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Description

PA BOLTER NX – NEXT EVOLUTION

 

As you can see, I still stayed strongly inspired by the design and core principle of the previous models.
From the Mini Crossbow and the PA Bolter - BBX16, the PA Bolter NX was born.

The new model fires 6 mm BBs, is slightly larger than its predecessors, and offers better possibilities for future attachments that are still to come.

 

 

What is needed?

 

For the rubber band version, you will need:

  • 2x Helical 10 mm Springs (B-BB003)
  • suitable rubber bands

For the crossbow version, you will also need:

  • 2x Helical 10 mm Springs (B-BB003)

In addition, for the crossbow arms you will need:

  • 4x Extension Springs 10 mm (BA001)
  • 2x Extension Springs 30 mm (BA007)
  • 12x Self Tapping Screws 2x5 mm (AA191)
  • some cord, for example Nylon Cord 0.6 mm (MF001)
     

     

 

🧩 Before you start printing

 

Before jumping into the full PA Bolter NX build, I highly recommend doing a quick tolerance test first, 

especially if you are using PETG or a new filament spool.

It is also important that the parts print with clean tolerances and smooth surfaces, since both can have a big impact on fit, 

function, and final assembly.




Assembly Guide

  • In the video, I assemble the crossbow version. There is one slightly tricky part, which is why I decided to make a video, since it is difficult to explain properly with just pictures and words.
  • I therefore recommend paying close attention at 0:36 min. In order to install the second side of the outer shell, it first has to be connected to the bolt in the slide, as shown in the video, and then carefully bent upward.


 

 

Safety warning

This model is a low-power mechanical toy launcher.

Do not aim or shoot at people, animals, faces, eyes, windows, vehicles, or fragile objects. Even if the impact may seem minor, a small projectile can still cause injury, especially if it hits the eye. Wearing eye protection is strongly recommended.

 

Safety Measures

This model includes constructive safety limitations. The mechanism, tolerances, and material strength are designed for the intended low-power toy function at the original scale.

Scaling, reinforcing, or modifying the model may cause malfunctions, breakage, or unsafe behavior and is not supported.

This model is not a firearm, not a firearm part, and is not compatible with real firearms or real ammunition.


 

License:

MakerWorld Exclusive License

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